Add build automation to generate jammy ISO

.github/workflows/build-jammy.yml

@@ -0,0 +1,22 @@
+name: build-jammy
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+  workflow_dispatch:
+
+jobs:
+  build:
+    runs-on: ubuntu-22.04
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Build
+        run: |
+          cd scripts
+          sed -i -E 's/TARGET_UBUNTU_VERSION=(.*)/TARGET_UBUNTU_VERSION="jammy"/g' default_config.sh
+          sed -i -E '/lupin-casper/d' chroot_build.sh
+          ./build.sh -