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.

package.json

@@ -0,0 +1,36 @@
+{
+  "name": "tech-talks-portal",
+  "private": true,
+  "version": "1.0.0",
+  "description": "Portail VitePress + decks Slidev",
+  "scripts": {
+    "sync": "node tools/sync-portal.mjs",
+    "start": "node tools/run.mjs",
+    "build": "node tools/sync-portal.mjs && vitepress build portal && node tools/build-all-decks.mjs",
+    "preview:static": "node tools/static-preview.mjs",
+    "dev:portal": "node tools/dev-portal.mjs",
+    "dev:slides:kubernetes-operators": "slidev slides/kubernetes-operators/slides.md --open",
+    "dev:slides:spring-ai": "slidev slides/spring-ai/slides.md --open",
+    "test": "npm run test:node && npm run test:e2e",
+    "test:node": "node --test tests/site-base.test.mjs tests/presentation-contracts.test.mjs tests/repo-consistency.test.mjs tests/sync-tmp-repo.test.mjs tests/dist-layout.test.mjs tests/vitepress-slides-route.test.mjs",
+    "test:unit": "npm run test:node",
+    "test:e2e": "playwright test",
+    "test:e2e:ui": "playwright test --ui"
+  },
+  "devDependencies": {
+    "@playwright/test": "^1.59.1",
+    "@slidev/cli": "^52.14.2",
+    "@slidev/theme-default": "^0.25.0",
+    "@types/qrcode": "^1.5.6",
+    "chokidar": "^4.0.3",
+    "serve": "^14.2.6",
+    "sirv": "^3.0.2",
+    "vitepress": "^1.6.4"
+  },
+  "engines": {
+    "node": ">=18"
+  },
+  "dependencies": {
+    "qrcode": "^1.5.4"
+  }
+}