Add initial Slidev project structure with configuration files and example slides

- Created .gitignore to exclude unnecessary files
- Added .npmrc for pnpm configuration
- Initialized deno.lock for dependency management
- Configured Netlify and Vercel deployment settings
- Created package.json with essential scripts and dependencies
- Added README.md with project introduction and usage instructions
- Included example slides in slides.md and imported slides functionality
- Developed a Counter component for interactive presentations
- Added external snippets for code examples

slidev/package.json

@@ -0,0 +1,16 @@
+{
+  "name": "slidev",
+  "type": "module",
+  "private": true,
+  "scripts": {
+    "build": "slidev build",
+    "dev": "slidev --open",
+    "export": "slidev export"
+  },
+  "dependencies": {
+    "@slidev/cli": "^52.1.0",
+    "@slidev/theme-default": "latest",
+    "@slidev/theme-seriph": "latest",
+    "vue": "^3.5.18"
+  }
+}