feat: move offline flags out of experimental mode

[hogo6002]

This PR moves offline flags out of experimental mode and removes the deprecated experimental-call-analysis flag

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 63.63636% with 4 lines in your changes missing coverage. Please review.

Project coverage is 64.57%. Comparing base (4ef1b47) to head (fe61c22).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
cmd/osv-scanner/fix/main.go	0.00%	2 Missing and 1 partial ⚠️
cmd/osv-scanner/internal/helper/helper.go	75.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1664      +/-   ##
==========================================
+ Coverage   64.40%   64.57%   +0.17%     
==========================================
  Files         155      156       +1     
  Lines       16003    16001       -2     
==========================================
+ Hits        10307    10333      +26     
+ Misses       5007     4986      -21     
+ Partials      689      682       -7     

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[cuixq]

@hogo6002 can you help to update the documentation as well? https://google.github.io/osv-scanner/experimental/

[hogo6002]

@hogo6002 can you help to update the documentation as well? https://google.github.io/osv-scanner/experimental/

updated