add initial marp implementation with sample content and build configuration

node_modules/speech-rule-engine/mjs/walker/dummy_walker.d.ts

@@ -0,0 +1,17 @@
+import { SemanticRole, SemanticType } from '../semantic_tree/semantic_meaning.js';
+import { AbstractWalker } from './abstract_walker.js';
+import { Focus } from './focus.js';
+import { Levels } from './levels.js';
+export declare class DummyWalker extends AbstractWalker<void> {
+    up(): Focus;
+    down(): Focus;
+    left(): Focus;
+    right(): Focus;
+    repeat(): Focus;
+    depth(): Focus;
+    home(): Focus;
+    getDepth(): number;
+    initLevels(): Levels<void>;
+    combineContentChildren(_type: SemanticType, _role: SemanticRole, _content: string[], _children: string[]): void[];
+    findFocusOnLevel(_id: number): Focus;
+}