add QT6 CI

.github/workflows/ubuntu22_build_test_qt6.yml

@@ -0,0 +1,40 @@
+name: ubuntu22_build_test
+
+# @Rapha please keep this one without any packaging or similar ;)
+# NOTE: This test only checks if the code in the repository builds under ubuntu x86 (dependencies installed)
+# Which is - simply put - the most basic test. If this test fails, there is something wrong with the code.
+
+on: [push]
+
+env:
+  # Customize the CMake build type here (Release, Debug, RelWithDebInfo, etc.)
+  BUILD_TYPE: Release
+
+jobs:
+  build:
+    #runs-on: ubuntu-18.04
+    #runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
+
+    steps:
+      - name: Checkout repository and submodules
+        uses: actions/checkout@v3
+        with:
+          submodules: recursive
+
+      - name: Install Qt
+        uses: jurplel/install-qt-action@v3
+        with:
+          version: 6.5
+          modules: qtcharts
+
+      - name: Install non-qt dependencies
+        run: |
+          sudo ./install_qt6_build_dep.sh
+
+      - name: Build with CMake
+        run: |
+          mkdir build
+          cd build
+          cmake ..
+          make -j4

install_qt6_build_dep.sh

@@ -0,0 +1,5 @@
+#!/usr/bin/env bash
+
+apt-get install -y build-essential cmake
+apt-get install -y libgstreamer-plugins-base1.0-dev gstreamer1.0-plugins-good
+apt-get install -y libavcodec-dev libavformat-dev