refactor(logging): add a logging abstraction and move the job logger onto it (#1295)

Add `act/common/logging`: a printf-style `Logger` on a slog-shaped `Handler`, with a logrus-backed handler as the only backend, plus a `logtest` handler for tests. Move the job logger onto it: `common.Logger` returns `*logging.Logger`, the job log formatters and the `Reporter` hook become handlers, and composite step IDs travel in the context.

Logging is tightly coupled to logrus types (hooks, formatters, `Entry.Data`). Going through our own interface first lets the remaining call sites move over with unchanged behavior, and lets the backend be swapped for `log/slog` in one place afterwards. The global process logger and its masking formatter stay on logrus for now.

Assisted-by: Codet
Co-authored-by: bircni <[email protected]>
Reviewed-on: https://gitea.com/gitea/runner/pulls/1295
Reviewed-by: bircni <[email protected]>

act/common/git/git.go

@@ -23,9 +23,8 @@ import (
 	"time"
 
 	"gitea.com/gitea/runner/act/common"
+	"gitea.com/gitea/runner/act/common/logging"
 	"gitea.com/gitea/runner/internal/pkg/lock"
-
-	log "github.com/sirupsen/logrus"
 )
 
 var (
@@ -189,7 +188,7 @@ type NewGitCloneExecutorInput struct {
 }
 
 // CloneIfRequired reports whether an existing local clone was reused.
-func CloneIfRequired(ctx context.Context, input NewGitCloneExecutorInput, logger log.FieldLogger) (bool, error) {
+func CloneIfRequired(ctx context.Context, input NewGitCloneExecutorInput, logger *logging.Logger) (bool, error) {
 	var origin string
 	_, err := os.Stat(filepath.Join(input.Dir, ".git")) // without it git would discover a repository around Dir
 	if err == nil {