attempt to add build-release workflow for github

.github/workflows/build-release.yml

@@ -0,0 +1,30 @@
+name: Release workflow
+
+on: workflow_dispatch
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v4
+
+    - name: create sources tarball
+      run: tar czvf bochs.tar.gz --exclude=.git bochs
+
+    - name: build linux binaries
+      run: cd bochs && ./build/redhat/make-rpm | tee ../build.log
+
+    - name: Upload release sources tarball
+      uses: actions/upload-artifact@v3
+      with:
+        name: bochs sources tarball
+        path: bochs.tar.gz
+
+    - name: Upload release linux RPM package
+      uses: actions/upload-artifact@v3
+      with:
+        name: bochs linux RPM
+        path: bochs.*.rpm