Add js web stuff to landing page + documentation

go/jsruntime/runtime/@solidjs/router/dist/routers/createRouter.d.ts

@@ -0,0 +1,10 @@
+import type { LocationChange, RouterContext, RouterUtils } from "../types.js";
+export declare function createRouter(config: {
+    get: () => string | LocationChange;
+    set: (next: LocationChange) => void;
+    init?: (notify: (value?: string | LocationChange) => void) => () => void;
+    create?: (router: RouterContext) => void;
+    utils?: Partial<RouterUtils>;
+}): (props: import("./components.js").BaseRouterProps) => import("solid-js").JSX.Element;
+export declare function bindEvent(target: EventTarget, type: string, handler: EventListener): () => void;
+export declare function scrollToHash(hash: string, fallbackTop?: boolean): void;