added firebase hosting

maybe ?

.firebaserc

@@ -0,0 +1,5 @@
+{
+  "projects": {
+    "default": "flutter-ecommerce-website-demo"
+  }
+}

.github/workflows/firebase-hosting-merge.yml

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+# This file was auto-generated by the Firebase CLI
+# https://github.com/firebase/firebase-tools
+
+name: Deploy to Firebase Hosting on merge
+'on':
+  push:
+    branches:
+      - master
+jobs:
+  build_and_deploy:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - run: flutter clean && flutter pub get
+      - uses: FirebaseExtended/action-hosting-deploy@v0
+        with:
+          repoToken: '${{ secrets.GITHUB_TOKEN }}'
+          firebaseServiceAccount: >-
+            ${{ secrets.FIREBASE_SERVICE_ACCOUNT_FLUTTER_ECOMMERCE_WEBSITE_DEMO
+            }}
+          channelId: live
+          projectId: flutter-ecommerce-website-demo

.github/workflows/firebase-hosting-pull-request.yml

@@ -0,0 +1,19 @@
+# This file was auto-generated by the Firebase CLI
+# https://github.com/firebase/firebase-tools
+
+name: Deploy to Firebase Hosting on PR
+'on': pull_request
+jobs:
+  build_and_preview:
+    if: '${{ github.event.pull_request.head.repo.full_name == github.repository }}'
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - run: flutter clean && flutter pub get
+      - uses: FirebaseExtended/action-hosting-deploy@v0
+        with:
+          repoToken: '${{ secrets.GITHUB_TOKEN }}'
+          firebaseServiceAccount: >-
+            ${{ secrets.FIREBASE_SERVICE_ACCOUNT_FLUTTER_ECOMMERCE_WEBSITE_DEMO
+            }}
+          projectId: flutter-ecommerce-website-demo

firebase.json

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+{
+  "hosting": {
+    "public": "build/web",
+    "ignore": [
+      "firebase.json",
+      "**/.*",
+      "**/node_modules/**"
+    ]
+  }
+}