Refactor: move Commit To APIFormat Code & Lot of StopWatch related things (#12729)

* move GitCommit to APIFormat convertion into convert package

* rename Commit convert functions

* move stopwatch to api convertion into convert package & rm unused code & extend test

* fix compare time

* Gitea not Gogs ;)

routers/api/v1/repo/issue_stopwatch.go

@@ -10,6 +10,7 @@ import (
 
 	"code.gitea.io/gitea/models"
 	"code.gitea.io/gitea/modules/context"
+	"code.gitea.io/gitea/modules/convert"
 	"code.gitea.io/gitea/routers/api/v1/utils"
 )
 
@@ -224,7 +225,7 @@ func GetStopwatches(ctx *context.APIContext) {
 		return
 	}
 
-	apiSWs, err := sws.APIFormat()
+	apiSWs, err := convert.ToStopWatches(sws)
 	if err != nil {
 		ctx.Error(http.StatusInternalServerError, "APIFormat", err)
 		return