feat!: rewrite for MathJax v3

js/MathtoolsConfiguration.d.ts

@@ -0,0 +1,7 @@
+import { MultlineItem } from 'mathjax-full/js/input/tex/ams/AmsItems.js';
+import { Configuration } from 'mathjax-full/js/input/tex/Configuration.js';
+export declare class MultlinedItem extends MultlineItem {
+    get kind(): string;
+    EndTable(): void;
+}
+export declare const MathtoolsConfiguration: Configuration;