feat: revert debugOptions && support debug message

[atian25]

Checklist

• npm test passes
• tests and/or benchmarks are included
• documentation is changed or added
• commit message follows commit guidelines

Affected core subsystem(s)

Description of change

eggjs/egg#1376 (comment)

• 回滚 egg-cluster 那个 PR 至 1.9.2
  • 去除 debug / debugAgent / debugBrk / debugAgentBrk 的支持
  • master 照样启动调试
  • agent 调试跟随 master，固定端口为 5856
• pick feat: delete default port options that has defined in egg #40
• egg-ready 消息附带 address 和 port
• debug 消息移到 master 文件，以便在 brk 情况下也能发送
• 分了几个 commit 的，第一个是 revert 的，按 commit 看可能会好看点。。。

[mention-bot]

@atian25, thanks for your PR! By analyzing the history of the files in this pull request, we identified @popomore, @dead-horse and @fengmk2 to be potential reviewers.

[codecov]

Codecov Report

Merging #43 into master will increase coverage by 0.45%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master      #43      +/-   ##
==========================================
+ Coverage   97.83%   98.29%   +0.45%     
==========================================
  Files           6        6              
  Lines         369      351      -18     
==========================================
- Hits          361      345      -16     
+ Misses          8        6       -2

Impacted Files	Coverage Δ
lib/app_worker.js	97.72% <ø> (-0.06%)	⬇️
lib/agent_worker.js	100% <ø> (ø)	⬆️
lib/master.js	98.14% <100%> (+0.96%)	⬆️
lib/utils/options.js	100% <100%> (ø)	⬆️

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[fengmk2]

到底应该先合并那个呢？

[atian25]

先 egg-cluster

[fengmk2]

1.11.2