feat: Add a command to generate JSON Schema

[haoel]

The JSON Schema could help to edit the EaseProbe's configuration YAML file easier - we can use it to generate the UI form on the Web or just edit the YAML file via IDE like VSCode or Intellij IDEA.

This PR just generates the EaseProbe YAML Configuration JSON Schema

• Support -j flag to generate the EaseProbe JSON Schema file.
• The generated scheme file is uploaded to resources/schema.json

[codecov-commenter]

Codecov Report

Base: 99.71% // Head: 99.83% // Increases project coverage by +0.12% 🎉

Coverage data is based on head (1f4e28a) compared to base (0108e6f).
Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #213      +/-   ##
==========================================
+ Coverage   99.71%   99.83%   +0.12%     
==========================================
  Files          70       67       -3     
  Lines        4975     4977       +2     
==========================================
+ Hits         4961     4969       +8     
+ Misses          9        5       -4     
+ Partials        5        3       -2     

Impacted Files	Coverage Δ
conf/log.go	100.00% <ø> (ø)
eval/eval.go	100.00% <ø> (ø)
global/global.go	100.00% <ø> (ø)
notify/aws/conf.go	100.00% <ø> (ø)
notify/base/base.go	100.00% <ø> (ø)
notify/dingtalk/dingtalk.go	100.00% <ø> (ø)
notify/discord/discord.go	100.00% <ø> (ø)
notify/email/email.go	100.00% <ø> (ø)
notify/lark/lark.go	100.00% <ø> (ø)
notify/log/log.go	100.00% <ø> (ø)
... and 30 more

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[proditis]

LGTM