Add indentationRules to lua

extensions/lua/language-configuration.json

@@ -21,5 +21,9 @@
 		["(", ")"],
 		["\"", "\""],
 		["'", "'"]
-	]
-}
+	],
+	"indentationRules": {
+		"increaseIndentPattern": "((\\b(else|function|then|do|repeat)\\b((?!\\b(end|until)\\b).)*)|(\\{\\s*))$",
+		"decreaseIndentPattern": "^\\s*((\\b(elseif|else|end|until)\\b)|(\\})|(\\)))"
+	}
+}