[docs] clean up badges

[codeboten]

The circleci badge is no longer relevant, removing it. Updating the github action badge icon as well and adding go report card badge.

[codecov]

Codecov Report

Merging #5317 (22ddda0) into main (b062dd3) will increase coverage by 0.03%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main    #5317      +/-   ##
==========================================
+ Coverage   90.54%   90.58%   +0.03%     
==========================================
  Files         190      190              
  Lines       11109    11109              
==========================================
+ Hits        10059    10063       +4     
+ Misses        827      824       -3     
+ Partials      223      222       -1     

Impacted Files	Coverage Δ
pdata/internal/common.go	95.38% <0.00%> (+0.76%)	⬆️

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