chore: some cleanup work for oss api

[seeflood]

Signed-off-by: seeflood zhou.qunli@foxmail.com

What this PR does:

• change the naming style from awsOSS to aws.s3
  

• add comments for components/oss/oss.go
  Maybe one line comment which refers to some other doc is enough
  

• modify makefile script to compile .proto files with specific protoc version. See feat: implement oss interface #556 (comment)

• generate api reference doc

Which issue(s) this PR fixes:

Fixes part of the subtasks in #723

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

[codecov]

Codecov Report

Merging #746 (aabb722) into main (69d04ec) will not change coverage.
The diff coverage is 15.00%.

@@           Coverage Diff           @@
##             main     #746   +/-   ##
=======================================
  Coverage   60.60%   60.60%           
=======================================
  Files         133      133           
  Lines        8318     8318           
=======================================
  Hits         5041     5041           
  Misses       2700     2700           
  Partials      577      577           

Impacted Files	Coverage Δ
components/file/minio/oss.go	45.00% <9.09%> (ø)
components/file/aws/file.go	25.18% <22.22%> (ø)

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