feat: Initialisation du projet mainframe

Ajout de la configuration docker, gitlab CI et autres fichiers.
Suppression des fichiers compose et importmap obsolètes.

package.json

@@ -0,0 +1,30 @@
+{
+    "name": "e-cosplay-contest",
+    "private": true,
+    "version": "0.0.0",
+    "type": "module",
+    "main": "index.js",
+    "scripts": {
+        "dev": "vite",
+        "build": "vite build",
+        "preview": "vite preview"
+    },
+    "devDependencies": {
+        "@hotwired/stimulus": "^3.0.0",
+        "@symfony/stimulus-bridge": "^3.2.0 || ^4.0.0",
+        "@tailwindcss/postcss": "^4.1.10",
+        "postcss": "^8.5.6",
+        "postcss-scss": "^4.0.9",
+        "rollup-plugin-javascript-obfuscator": "^1.0.4",
+        "sass": "^1.89.2",
+        "vite": "^7.0.0"
+    },
+    "dependencies": {
+        "@grafikart/drop-files-element": "^1.0.9",
+        "@hotwired/turbo": "^8.0.13",
+        "@sentry/browser": "^9.34.0",
+        "@tailwindcss/vite": "^4.1.10",
+        "autoprefixer": "^10.4.21",
+        "tailwindcss": "^4.1.10"
+    }
+}