Add Minecraft function file syntax definition (#6318)

* Add MCFunction

* Add "minecraft" label

* Correct supported ST version

* Update Sublime version to >=3092

repository/m.json

@@ -891,6 +891,17 @@
 				}
 			]
 		},
+		{
+			"name": "MCFunction",
+			"details": "https://github.com/AjaxGb/Sublime-MCFunction",
+			"labels": ["language syntax", "minecraft"],
+			"releases": [
+				{
+					"sublime_text": ">=3092",
+					"tags": true
+				}
+			]
+		},
 		{
 			"name": "MDL Language",
 			"details": "https://github.com/ardenpm/sublime-mdl-language",