Merge pull request #63 from 52North/fix/missing-schemaversion

add $schema to commandStatusCode.json

api/part2/openapi/schemas/json/commandStatusCode.json

@@ -1,4 +1,5 @@
 {
+  "$schema": "http://json-schema.org/draft-07/schema#",
   "type": "string",
   "oneOf": [
     { "const": "PENDING", "description": "The command is pending, meaning it has been received by the system but no decision to accept or reject it has been taken." },
@@ -11,4 +12,4 @@
     { "const": "FAILED", "description": "The command has failed during execution. The `message` property provides the reason for failure. This is a final state. No further status updates will be sent." },
     { "const": "COMPLETED", "description": "The command has completed after a successful execution. The actual execution time must be provided using the `executionTime` property. This is a final state. No further status updates will be sent." }
   ]
-}
+}