enable more linters, report coverage and cache mods

[mmorel-35]

This enables durationcheck, gofmt, gofumpt, misspell, unparam linters

[codecov-commenter]

Codecov Report

❗ No coverage uploaded for pull request base (master@b1186a6). Click here to learn what that means.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master    #1205   +/-   ##
=========================================
  Coverage          ?   44.97%           
=========================================
  Files             ?       51           
  Lines             ?     8058           
  Branches          ?        0           
=========================================
  Hits              ?     3624           
  Misses            ?     3980           
  Partials          ?      454           

Flag	Coverage Δ
Linux	40.38% <0.00%> (?)
Windows	41.17% <0.00%> (?)
go-1.16.x	44.84% <0.00%> (?)
go-1.17.x	44.97% <0.00%> (?)
macOS	43.47% <0.00%> (?)

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

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[shirou]

Thank you!