feat(go): add `goimports`, `gorename` and `gopls`
feat(go): add `goimports`, `gorename` and `gopls`

Also unifies all packages within a single list and makes the list
function-local.

Signed-off-by: Yghor Kerscher <95d23bc6109ee665a51a66121173c9c2a1098109@acm.org>

kerscher/dotfiles