add initial marp implementation with sample content and build configuration

node_modules/mathjax-full/js/a11y/explorer/TreeExplorer.d.ts

@@ -0,0 +1,22 @@
+import { A11yDocument, Region } from './Region.js';
+import { Explorer, AbstractExplorer } from './Explorer.js';
+export interface TreeExplorer extends Explorer {
+}
+export declare class AbstractTreeExplorer extends AbstractExplorer<void> {
+    document: A11yDocument;
+    protected region: Region<void>;
+    protected node: HTMLElement;
+    protected mml: HTMLElement;
+    protected constructor(document: A11yDocument, region: Region<void>, node: HTMLElement, mml: HTMLElement);
+    readonly stoppable = false;
+    Attach(): void;
+    Detach(): void;
+}
+export declare class FlameColorer extends AbstractTreeExplorer {
+    Start(): void;
+    Stop(): void;
+}
+export declare class TreeColorer extends AbstractTreeExplorer {
+    Start(): void;
+    Stop(): void;
+}