UI infrastructure and simple "Help" dialog (#3)

Sets up some WIP infrastructure for building out the UI, and adds a simple popup
to show the navigation controls for the app.

framework/vite.config.ts

@@ -0,0 +1,50 @@
+/// <reference types='vitest' />
+import { defineConfig } from "vite";
+import dts from "vite-plugin-dts";
+import * as path from "path";
+import { nxViteTsPaths } from "@nx/vite/plugins/nx-tsconfig-paths.plugin";
+
+export default defineConfig({
+	cacheDir: "../node_modules/.vite/framework",
+
+	plugins: [
+		nxViteTsPaths(),
+		dts({
+			entryRoot: "src",
+			tsConfigFilePath: path.join(__dirname, "tsconfig.lib.json"),
+			skipDiagnostics: true,
+		}),
+	],
+
+	// Uncomment this if you are using workers.
+	// worker: {
+	//  plugins: [ nxViteTsPaths() ],
+	// },
+
+	// Configuration for building your library.
+	// See: https://vitejs.dev/guide/build.html#library-mode
+	build: {
+		lib: {
+			// Could also be a dictionary or array of multiple entry points.
+			entry: "src/index.ts",
+			name: "framework",
+			fileName: "index",
+			// Change this to the formats you want to support.
+			// Don't forget to update your package.json as well.
+			formats: ["es", "cjs"],
+		},
+		rollupOptions: {
+			// External packages that should not be bundled into your library.
+			external: [],
+		},
+	},
+
+	test: {
+		globals: true,
+		cache: {
+			dir: "../node_modules/.vitest",
+		},
+		environment: "jsdom",
+		include: ["src/**/*.{test,spec}.{js,mjs,cjs,ts,mts,cts,jsx,tsx}"],
+	},
+});