feat: Add debug (#28)

Reviewed-on: https://gitea.com/gitea/gitea-mcp/pulls/28
Reviewed-by: yp05327 <576951401@qq.com>
Co-authored-by: hiifong <i@hiif.ong>
Co-committed-by: hiifong <i@hiif.ong>

pkg/gitea/gitea.go

@@ -35,6 +35,9 @@ func Client() *gitea.Client {
 			}
 			opts = append(opts, gitea.SetHTTPClient(httpClient))
 		}
+		if flag.Debug {
+			opts = append(opts, gitea.SetDebugMode())
+		}
 		client, err = gitea.NewClient(flag.Host, opts...)
 		if err != nil {
 			log.Fatalf("create gitea client err: %v", err)