state: move pruneBlocks function from consensus/state to state/execution

Closes #5414

## Description

Change block_size gauge to a histogram to observe block size overtime

This will help will see which chains have full blocks vs empty. 

closes #5752

## Description

Internalize some libs. This reduces the amount ot public API tendermint is supporting. The moved libraries are mainly ones that are used within Tendermint-core.

This is an attempt to clean up the logging message as requested in #6269.

## Description

- Add `context.Context` to Privval interface

This pr does not introduce context into our custom privval connection protocol because this will be removed in the next release. When this pr is released.

ref: #5912

ref: https://github.com/tendermint/tendermint/pull/6140#discussion_r578635756

ref: https://github.com/tendermint/tendermint/issues/5912

Executed a local network using simapp and looked for logs that seemed superfluous. This isn't by any means an exhaustive grooming, but should drastically help legibility of logs.


ref: #5912

Conflicting votes are now sent to the evidence pool to form duplicate vote evidence only once
the height of the evidence is finished and the time of the block finalised.

time_iota_ms is intended to ensure that an honest validator always generates timestamps 
with time increasing monotonically. For this purpose, it always suffices to have this parameter
set to `1ms`. Allowing users to choose different numbers increases bug surface area.
Thus the code now ignores the user provided time_iota_ms parameter (marking it as unused), 
and uses 1ms internally.

Fixes #5422. That turned out to be a whole lot easier than expected.

and don't return errors on seeing the same evidence twice

* docs: fix /validators description

Refs https://github.com/tendermint/spec/pull/169

* consensus: remove nil err from logging statement

* update UPGRADING.md

* note about LightBlocks

evidence: modify evidence types (#5342)

light: detect light client attacks (#5344)

evidence: refactor evidence pool (#5345)

abci: application evidence prepared by evidence pool (#5354)

## Description

Make an interface for the state store. 

Closes: #5213

## Description

Enable errcheck linter throughout the codebase

Closes: #5059

## Description

Work towards enabling errcheck

ref #5059

## Description

Part of the issue is to add metrics to the websocket connection. It seems this would require some moving around of things in the node pkg. I opted to not make this change now, and wait for when we do a node pkg refactor. 

If someone disagrees with this appraoch please let me know, I can attempt to get metrics into the rpc layer.

There is not a need to update documentation as it already states this metric is a histogram..

Closes: #1791

## Description

remove unneeded types 

![](https://media1.giphy.com/media/fSAyceY3BCgtiQGnJs/giphy.gif)

ref #5288

Implementation spec of Double Signing Risk Reduction [ADR-51](https://github.com/tendermint/tendermint/blob/master/docs/architecture/adr-051-double-signing-risk-reduction.md) by B-Harvest
- Add `DoubleSignCheckHeight` config variable to ConsensusConfig for "How many blocks looks back to check existence of the node's consensus votes when before joining consensus"
- Add `consensus.double_sign_check_height` to `config.toml` and `tendermint node` as flag for set `DoubleSignCheckHeight`
- Set default `consensus.double_sign_check_height` to `0`  ( it could be adjustable in this PR, disable when 0  )

Refs

- [ADR-51](https://github.com/tendermint/tendermint/blob/master/docs/architecture/adr-051-double-signing-risk-reduction.md)
- [https://github.com/tendermint/tendermint/issues/4059](https://github.com/tendermint/tendermint/issues/4059)
- [https://github.com/tendermint/tendermint/pull/4262](https://github.com/tendermint/tendermint/pull/4262)

## Description

This PR aims to make the crypto.PubKey interface more intuitive. 

Changes: 

- `VerfiyBytes` -> `VerifySignature`

Before `Bytes()` was amino encoded, now since it is the byte representation should we get rid of it entirely?

EDIT: decided to keep `Bytes()` as it is useful if you are using the interface instead of the concrete key

Closes: #XXX

Adds a genesis parameter `initial_height` which specifies the initial block height, as well as ABCI `RequestInitChain.InitialHeight` to pass it to the ABCI application, and `State.InitialHeight` to keep track of the initial height throughout the code. Fixes #2543, based on [RFC-002](https://github.com/tendermint/spec/pull/119). Spec changes in https://github.com/tendermint/spec/pull/135.

adds blockstore interface to evidence and adds fix to byzantine test

Closes #4865

## Description

This PR wraps the stdlib sync.(RW)Mutex & godeadlock.(RW)Mutex. This enables using go-deadlock via a build flag instead of using sed to replace sync with godeadlock in all files

Closes: #3242

Closes #5074 

Old code does not work when --consensus.create_empty_blocks=false
(because it only calls tmos.Kill when ApplyBlock fails). New code is
listening ABCI clients for Quit and kills TM process if there were any
errors.

fix bug so that PotentialAmnesiaEvidence is being gossiped

handle inbound amnesia evidence correctly

add method to check if potential amnesia evidence is on trial

fix a bug with the height when we upgrade to amnesia evidence

change evidence to using just pointers.

More logging in the evidence module

Co-authored-by: Marko <marbar3778@yahoo.com>

Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>

## Description

migrate consensus to protobuf

Closes: #XXX

LastCommitRound should always be >= 0 for heights > 1.

In State.updateToState, last precommit is computed  only when round
greater than -1 and has votes. But "LastCommit" is always updated
regardless of the condition. If there's no last precommit, "LastCommit"
is set to (*types.VoteSet)(nil). That's why "LastCommit" can be -1 for
heights > 1.

To fix it, only update State.RoundState.LastCommit when there is last
precommit.

Fixes #2737

Co-authored-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>

Uses new JSON encoder in #4955 for all JSON. Branched off of #4968.

## Description

migrate store to protobuf

Closes: #XXX

Closes: #4578

Co-authored-by: Anton Kaliaev <anton.kalyaev@gmail.com>

## Description

in consensus/state.go, when calulating metrics, retrieve address (ergo, pubkey) once prior to iterating over validatorset to ensure we do not make excessive calls to signer.

Partially closes: #4865