Support customized branch for committing (#51)

action.yml

@@ -15,6 +15,11 @@ inputs:
     description: GitHub Token used to commit metrics
     default: ""
 
+  # Branch to commit
+  committer_branch:
+    description: The branch used to commit metrics
+    default: ""
+
   # GitHub username
   # Optional, as it defaults "token"'s owner
   user:
@@ -551,4 +556,4 @@ runs:
         METRICS_ACTION: ${{ github.action }}
         METRICS_ACTION_PATH: ${{ github.action_path }}
         METRICS_USE_PREBUILT_IMAGE: ${{ inputs.use_prebuilt_image }}
-        INPUTS: ${{ toJson(inputs) }}
+        INPUTS: ${{ toJson(inputs) }}