chore: auto-generate the pb code and api-reference docs based on the proto files

[seeflood]

Signed-off-by: seeflood [email protected]

What this PR does:
Run make proto and the script will generate the pb code and api-reference docs based on the proto files automatically.

It can generate more things after I submitted some other PR
Which issue(s) this PR fixes:

It's a subtask of #763

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

[codecov]

Codecov Report

Merging #764 (cb394c5) into main (f83c614) will not change coverage.
The diff coverage is n/a.

❗ Current head cb394c5 differs from pull request most recent head 2233553. Consider uploading reports for the commit 2233553 to get more accurate results

@@           Coverage Diff           @@
##             main     #764   +/-   ##
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  Coverage   60.56%   60.56%           
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  Files         133      133           
  Lines        8323     8323           
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  Hits         5041     5041           
  Misses       2705     2705           
  Partials      577      577           

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