Code Cleanup (#869)

- switch to golangci-lint for linting
- switch to gofmpt for formatting
- fix lint and fmt issues that came up from switch to new tools
- upgrade go-sdk to 0.23.2
- support pagination for listing tracked times
- remove `FixPullHeadSha` workaround (upstream fix has been merged for 5+ years at this point)
- standardize on US spelling (previously a mix of US&UK spelling)
- remove some unused code
- reduce some duplication in parsing state and issue type
- reduce some duplication in reading input for secrets and variables
- reduce some duplication with PR Review code
- report error for when yaml parsing fails
- various other misc cleanup

Reviewed-on: https://gitea.com/gitea/tea/pulls/869
Co-authored-by: techknowlogick <techknowlogick@gitea.com>
Co-committed-by: techknowlogick <techknowlogick@gitea.com>

modules/task/pull_checkout.go

@@ -9,7 +9,6 @@ import (
 	"code.gitea.io/sdk/gitea"
 	"code.gitea.io/tea/modules/config"
 	local_git "code.gitea.io/tea/modules/git"
-	"code.gitea.io/tea/modules/workaround"
 
 	"github.com/go-git/go-git/v5"
 	git_config "github.com/go-git/go-git/v5/config"
@@ -29,9 +28,6 @@ func PullCheckout(
 	if err != nil {
 		return fmt.Errorf("couldn't fetch PR: %s", err)
 	}
-	if err := workaround.FixPullHeadSha(client, pr); err != nil {
-		return err
-	}
 
 	// FIXME: should use ctx.LocalRepo..?
 	localRepo, err := local_git.RepoForWorkdir()