Create main.yml and add a GitHub action

.github/workflows/main.yml

@@ -0,0 +1,49 @@
+name: Build Roblox-ts Project
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      # 1. Récupération du code
+      - name: Checkout repo
+        uses: actions/checkout@v3
+
+      # 2. Setup Node.js (pour roblox-ts)
+      - name: Setup Node.js
+        uses: actions/setup-node@v3
+        with:
+          node-version: 18
+
+      # 3. Installer les dépendances npm
+      - name: Install dependencies
+        run: npm ci
+
+      # 4. Build roblox-ts (compile TS → Luau)
+      - name: Build project
+        run: npm run build
+
+      # 5. Installer Rojo (CLI)
+      - name: Install Rojo
+        run: |
+          curl -L https://github.com/rojo-rbx/rojo/releases/download/v7.4.1/rojo-7.4.1-linux.zip -o rojo.zip
+          unzip rojo.zip -d rojo
+          sudo mv rojo/rojo /usr/local/bin/rojo
+          rojo --version
+
+      # 6. Générer un fichier modèle (rbxm / rbxlx)
+      - name: Build Roblox model
+        run: rojo build --output plugin.rbxm
+
+      # 7. Sauvegarder l’output comme artifact
+      - name: Upload build artifact
+        uses: actions/upload-artifact@v3
+        with:
+          name: roblox-build
+          path: plugin.rbxm