add initial marp implementation with sample content and build configuration

node_modules/mathjax-full/js/output/svg/FontCache.d.ts

@@ -0,0 +1,14 @@
+import { SVG } from '../svg.js';
+export declare class FontCache<N, T, D> {
+    protected jax: SVG<N, T, D>;
+    protected cache: Map<string, string>;
+    protected defs: N;
+    protected localID: string;
+    protected nextID: number;
+    constructor(jax: SVG<N, T, D>);
+    cachePath(variant: string, C: string, path: string): string;
+    clearLocalID(): void;
+    useLocalID(id?: string): void;
+    clearCache(): void;
+    getCache(): N;
+}