add CI test

.github/workflows/ci-build.yml

@@ -0,0 +1,20 @@
+name: CI Build
+on: 
+  push:
+    branches: [master]
+  pull_request:
+    branches: [master]
+jobs:
+  linux:
+    runs-on: ubuntu-22.04
+    steps:
+    - name: Install Dependencies
+      run: |
+        sudo apt update
+        sudo apt install -y python3-pip python3-tk xvfb libxrandr2 libegl1
+        pip3 install ogre-python
+    - uses: actions/checkout@v4
+    - name: Test
+      run: |
+        cd test
+        xvfb-run timeout --preserve-status 5s python3 ../ogre_mesh_viewer.py cube.obj

test/cube.obj

@@ -0,0 +1,18 @@
+# Blender 4.0.2
+# www.blender.org
+o Cube
+v 1.000000 1.000000 -1.000000
+v 1.000000 -1.000000 -1.000000
+v 1.000000 1.000000 1.000000
+v 1.000000 -1.000000 1.000000
+v -1.000000 1.000000 -1.000000
+v -1.000000 -1.000000 -1.000000
+v -1.000000 1.000000 1.000000
+v -1.000000 -1.000000 1.000000
+s 0
+f 1 5 7 3
+f 4 3 7 8
+f 8 7 5 6
+f 6 2 4 8
+f 2 1 3 4
+f 6 5 1 2