Add application source code, configs and assets

- Controllers, Entity, Repository, Services, Twig extensions
- Templates (account, emails, home, legal, security, unsubscribe)
- Symfony config updates (bundles, security, framework, services)
- Vite + Bun setup with PostCSS
- Caddy config, CLAUDE.md, README
- Update .gitignore (node_modules, .idea, cert)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

package.json

@@ -0,0 +1,33 @@
+{
+    "name": "e-cosplay",
+    "private": true,
+    "version": "0.0.0",
+    "type": "module",
+    "main": "index.js",
+    "scripts": {
+        "dev": "vite",
+        "build": "vite build",
+        "preview": "vite preview"
+    },
+    "devDependencies": {
+        "@tailwindcss/postcss": "^4.1.18",
+        "idb": "^8.0.3",
+        "idb-keyval": "^6.2.2",
+        "postcss": "^8.5.6",
+        "postcss-scss": "^4.0.9",
+        "rollup-plugin-javascript-obfuscator": "^1.0.4",
+        "sass": "^1.97.3",
+        "vite": "^7.3.1"
+    },
+    "dependencies": {
+        "@grafikart/drop-files-element": "^1.0.9",
+        "@hotwired/turbo": "^8.0.23",
+        "@sentry/browser": "^10.38.0",
+        "@tailwindcss/vite": "^4.1.18",
+        "autoprefixer": "^10.4.24",
+        "insights-js": "^1.2.11",
+        "tailwindcss": "^4.1.18",
+        "vite-plugin-compression": "^0.5.1",
+        "vite-plugin-favicon": "^1.0.8"
+    }
+}