Support annotated tags when using create release API (#31840)

This adds a new field, "tag_message", that represents the message of the
annotated tag.

Resolves #31835.

---------

Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

templates/swagger/v1_json.tmpl

@@ -22295,6 +22295,10 @@
           "type": "boolean",
           "x-go-name": "IsPrerelease"
         },
+        "tag_message": {
+          "type": "string",
+          "x-go-name": "TagMessage"
+        },
         "tag_name": {
           "type": "string",
           "x-go-name": "TagName"