Added tick.json validation

source/behavior/functions/tick.json

@@ -0,0 +1,21 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema",
+  "title": "Tick",
+  "description": "Mcfunction that are to be called per game tick (20 times per second)",
+  "additionalProperties": false,
+  "examples": [{ "values": ["foo"] }],
+  "properties": {
+    "values": {
+      "title": "Values",
+      "description": "The collection of function path to execute",
+      "type": "array",
+      "items": {
+        "title": "Function path",
+        "description": "The path to the function",
+        "type": "string",
+        "pattern": "[a-zA-Z_\\-\\/ ]+",
+        "examples": ["foo", "folder/foo"]
+      }
+    }
+  }
+}