compress profile and trace & add download profile api

[xyctruth]

No description provided.

[codecov]

Codecov Report

Merging #51 (86f94ff) into master (2e4c7f8) will increase coverage by 0.10%.
The diff coverage is 67.56%.

@@            Coverage Diff             @@
##           master      #51      +/-   ##
==========================================
+ Coverage   80.25%   80.36%   +0.10%     
==========================================
  Files          17       17              
  Lines        1003      988      -15     
==========================================
- Hits          805      794      -11     
+ Misses        146      142       -4     
  Partials       52       52              

Flag	Coverage Δ
unittests	80.36% <67.56%> (+0.10%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
pkg/storage/store.go	72.72% <ø> (ø)
pkg/storage/badger/store.go	73.62% <58.62%> (-2.47%)	⬇️
pkg/apiserver/api.go	71.62% <100.00%> (+1.50%)	⬆️
pkg/apiserver/ui/ui.go	83.05% <100.00%> (ø)
pkg/collector/collector.go	76.16% <100.00%> (+1.84%)	⬆️

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