feat(js-sdk): add Node.js SDK

[fengmk2]

What this PR does:

Which issue(s) this PR fixes:

Fixes #258

Special notes for your reviewer:

• State API
• File API
• Sequencer API
• Distributed Lock API
• Pub/Sub API
• RPC API
• Binding API

Does this PR introduce a user-facing change?:

[mosn-community-bot]

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[fengmk2]

State API finished, and all unit tests pass on local env

[codecov]

Codecov Report

Merging #262 (ef81bcf) into main (7a133d2) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #262   +/-   ##
=======================================
  Coverage   56.65%   56.65%           
=======================================
  Files          48       48           
  Lines        2058     2058           
=======================================
  Hits         1166     1166           
  Misses        769      769           
  Partials      123      123           

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[seeflood]

I fixed the ut failure of sequencer and lock ,and added license headers for code files.
You can use a one line command to automatically add license headers, see https://mosn.io/layotto/#/zh/development/explanation-for-github-workflow?id=how-to-add-license-headers-for-all-files-automatically

[fengmk2]

@seeflood 所有已知的 API 都实现了，可以 review 了。

[seeflood]

Thanks for your contribution!
I will modify the check license configuration and add license headers for your code once the code review finished (to avoid be overwrited by your push) So ignore the CI warning for now :)

[fengmk2]

这里配置没有生效

[fengmk2]

move into https://github.com/layotto/js-sdk

[seeflood]

Hi @fengmk2 ,it seems that we still need part of your PR, like:

• jstype in runtime.proto
  

• configs/config_integration_redis_etcd.json

• Makefile
  

Could u please submit a PR only including these ? Or should I just reopen and modify this PR

[fengmk2]

@seeflood new PR landed #316