Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>

- Selecting only a single or subset of all components of shadowsocks-libev is
  now possible (this is the main motivation behind the rewrite)
- Configuring multiple instances of the same component is now also possible
- Same option names as with the json config
- Unified configuration generation method for each component
- Add support for ss-local, ss-tunnel, ss-server
- Most data validation is now done with validate_data
- USE_PROCD=1
- Update ss-rules with the one from shadowsocks/luci-app-shadowsocks
- Add README.md
- Set myself as the maintainer

Addresses #4435

Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>

Fix the multiple UDP source port issue.
Allow using different IP and ports for TCP and UDP

Signed-off-by: Jian Chang <aa65535@live.com>

Shadowsocks-libev is a lightweight secured socks5 proxy for embedded devices and low end boxes.

Signed-off-by: aa65535 <aa65535@live.com>