Add staticcheck at CI

[smiletrl]

What this PR does:

Add staticcheck for Go code

A quick overview of current staticcheck result , result in great potential improvement room for this repository :)

Once we approve adding staticcheck for this repository, I can add fixes for staticcheck in this PR.

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

Does this PR introduce a user-facing change?: