add initial marp implementation with sample content and build configuration

node_modules/mathjax-full/js/util/BitField.d.ts

@@ -0,0 +1,14 @@
+export declare class BitField {
+    protected static MAXBIT: number;
+    protected static next: number;
+    protected static names: Map<string, number>;
+    protected bits: number;
+    static allocate(...names: string[]): void;
+    static has(name: string): boolean;
+    set(name: string): void;
+    clear(name: string): void;
+    isSet(name: string): boolean;
+    reset(): void;
+    protected getBit(name: string): number;
+}
+export declare function BitFieldClass(...names: string[]): typeof BitField;