Add github action

.github/workflows/ci.yml

@@ -0,0 +1,30 @@
+name: Build and test PyBDSF
+
+on: [push, pull_request]
+
+jobs:
+  build:
+    runs-on: ubuntu-22.04
+    steps:
+    - uses: actions/checkout@v4
+    - name: Apt install required packages
+      run: |
+        sudo apt-get install -y libcasacore-dev build-essential cmake wget
+    - name: Get measures data
+      run: |
+        mkdir ${HOME}/casacore-data && pushd ${HOME}/casacore-data
+        wget ftp://[email protected]/outgoing/Measures/WSRT_Measures.ztar
+        tar xf WSRT_Measures.ztar
+        echo "measures.directory: ~/casacore-data" > ${HOME}/.casarc
+        popd
+    - name: Build and install
+      run: |
+        mkdir build
+        pushd build
+        cmake --build ..
+        popd
+    - name: Test PyBDSF
+      run: |
+        pushd build
+        make test
+        popd