ci: add github action for build image

Signed-off-by: tfx2001 <[email protected]>

Author: tfx2001

.github/workflows/build.yml

@@ -0,0 +1,29 @@
+on:
+  push:
+    branches: [ 'hpm-2024.05.1', 'dev/*' ]
+  pull_request:
+
+name: Build
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      
+      - name: Cache Buildroot Download Sources
+        uses: actions/cache@v3
+        with:
+          path: dl
+
+      - name: Build image
+        run: |
+          make hpmicro_hpm6360evk_defconfig
+          make all
+
+      - name: Archive image artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: image
+          path: output/images/flash.img
+