* Allow for zero witness providers
* Verify provider duplicates, fix tests
* Add duplicate provider ID to the error
* Return error on attempt to remove last witness
* Verify duplicates when restoring from store
This pull request removes the homegrown mocks in `light/provider/mock` in favor of mockery mocks.
Adds a simple benchmark only mock to avoid the overhead of `reflection` that `mockery` incurs.
part of #5274
* add time warping lunatic attack test
* create too high and connecton refused errors and add to the light client provider
* add height check to provider
* introduce block lag
* add detection logic for processing forward lunatic attack
* add node-side verification logic
* clean up tests and formatting
* update adr's
* update testing
* fix fetching the latest block
* format
* update changelog
* implement suggestions
* modify ADR's
* format
* clean up node evidence verification
Introduces heuristics that track the amount of no responses or unavailable blocks a provider has for more robust provider handling by the light client. Use concurrent calls to all witnesses when a new primary is needed.