Add Makefile, package.json, and initial configuration for VitePress and Slidev integration

- Introduced a Makefile for streamlined commands related to building, running, and managing presentations.
- Created package.json to define project metadata, dependencies, and scripts for development and testing.
- Added .gitignore entries to exclude build artifacts and temporary files from version control.
- Included playwright.config.mjs for end-to-end testing setup with Playwright.
- Added README.md for project documentation, outlining setup instructions and development guidelines.

portal/.vitepress/theme/index.ts

@@ -0,0 +1,13 @@
+import type { Theme } from 'vitepress'
+import DefaultTheme from 'vitepress/theme'
+import QrHomeSection from '../components/QrHomeSection.vue'
+import QrEncode from '../components/QrEncode.vue'
+import './custom.css'
+
+export default {
+  extends: DefaultTheme,
+  enhanceApp({ app }) {
+    app.component('QrHomeSection', QrHomeSection)
+    app.component('QrEncode', QrEncode)
+  },
+} satisfies Theme