feat: add molang package

1. upgrade bukkit chat
2. fix config update error

Signed-off-by: MiaoWoo <admin@yumc.pw>

packages/molang/src/parser/parselets/questionOperator.ts

@@ -0,0 +1,26 @@
+import { Parser } from '../parse'
+import { Token } from '../../tokenizer/token'
+import { IExpression } from '../expression'
+import { GenericOperatorExpression } from '../expressions/genericOperator'
+import { IInfixParselet } from './infix'
+import { TernaryParselet } from './ternary'
+import { EPrecedence } from '../precedence'
+
+const ternaryParselet = new TernaryParselet(EPrecedence.CONDITIONAL)
+export class QuestionOperator implements IInfixParselet {
+	constructor(public precedence = 0) {}
+
+	parse(parser: Parser, leftExpression: IExpression, token: Token) {
+		if (parser.match('QUESTION')) {
+			return new GenericOperatorExpression(
+				leftExpression,
+				parser.parseExpression(this.precedence),
+				'??',
+				(leftExpression: IExpression, rightExpression: IExpression) =>
+					leftExpression.eval() ?? rightExpression.eval()
+			)
+		} else {
+			return ternaryParselet.parse(parser, leftExpression, token)
+		}
+	}
+}