add initial marp implementation with sample content and build configuration

node_modules/speech-rule-engine/js/walker/focus.d.ts

@@ -0,0 +1,20 @@
+import { SemanticNode } from '../semantic_tree/semantic_node.js';
+import { RebuildStree } from './rebuild_stree.js';
+export declare class Focus {
+    private nodes;
+    private primary;
+    private domNodes;
+    private domPrimary_;
+    private allNodes;
+    static factory(primaryId: string, nodeIds: string[], rebuilt: RebuildStree, dom: Element): Focus;
+    private static generateAllVisibleNodes_;
+    private static getAllVisibleNodes;
+    constructor(nodes: SemanticNode[], primary: SemanticNode);
+    getSemanticPrimary(): SemanticNode;
+    getSemanticNodes(): SemanticNode[];
+    getNodes(): Element[];
+    getDomNodes(): (Element | null)[];
+    getDomPrimary(): Element;
+    toString(): string;
+    clone(): Focus;
+}