adding asyncapi to function defs

Signed-off-by: Tihomir Surdilovic <[email protected]>

Author: tsurdilo

api/src/main/resources/schema/functions/functiondef.json

@@ -17,6 +17,7 @@
       "description": "Defines the function type. Is either `rest`, `rpc` or `expression`. Default is `rest`",
       "enum": [
         "rest",
+        "asyncapi",
         "rpc",
         "graphql",
         "odata",