Split git tag and github release options (#680)

* Split git tag and github release options

* Rename to push-git-tags

* Validate inputs

action.yml

@@ -29,6 +29,12 @@ inputs:
     description: "A boolean value to indicate whether to create Github releases after `publish` or not"
     required: false
     default: true
+  push-git-tags:
+    description: >
+      Whether to create git tags after publish. If `create-github-releases` is set to `true`,
+      this option will also always be `true`.
+    required: false
+    default: true
   commit-mode:
     description: >
       An enum to specify the commit mode. Use "git-cli" to push changes using the Git CLI,