chore: add make help cmd

[yyzxw]

add make help command, result:

Checklist:

• Either (a) I've created an enhancement proposal and discussed it with the community, (b) this is a bug fix, or (c) this is a chore.
• The title of the PR is (a) conventional with a list of types and scopes found here, (b) states what changed, and (c) suffixes the related issues number. E.g. "fix(controller): Updates such and such. Fixes #1234".
• I've signed my commits with DCO
• I have written unit and/or e2e tests for my change. PRs without these are unlikely to be merged.
• My builds are green. Try syncing with master if they are not.
• My organization is added to USERS.md.

[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
3.5% Duplication

[github-actions]

Go Published Test Results

1 989 tests   1 989 ✔️  2m 35s ⏱️
   118 suites         0 💤
       1 files           0 ❌

Results for commit 693c48f.

[codecov]

Codecov Report

Patch and project coverage have no change.

Comparison is base (1d53b25) 81.66% compared to head (693c48f) 81.66%.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #2854   +/-   ##
=======================================
  Coverage   81.66%   81.66%           
=======================================
  Files         133      133           
  Lines       20192    20192           
=======================================
  Hits        16490    16490           
  Misses       2849     2849           
  Partials      853      853           

☔ View full report in Codecov by Sentry.
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[github-actions]

E2E Tests Published Test Results

    4 files      4 suites   3h 34m 48s ⏱️
  96 tests   82 ✔️   5 💤   9 ❌
412 runs  366 ✔️ 20 💤 26 ❌

For more details on these failures, see this check.

Results for commit 693c48f.

[zachaller]

Thanks for the contrib