Add check for compilation via GNU compiler

.github/workflows/check_gcc

@@ -0,0 +1,26 @@
+name: check
+on: push
+
+jobs:
+  check:
+    strategy:
+      matrix:
+        os: [macos-latest, windows-latest, ubuntu-latest]
+    runs-on: ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: build
+        run: g++ --std=c++20 -o RangeShifter.exe ./src/*.cpp ./src/RScore/!(Main).cpp -DRSDEBUG -DRSWIN64 -DLINUX_CLUSTER
+
+      - name: run
+        run: |
+          cd ./run_on_gha/rs_test_project
+          ./rs.exe
+
+      - name: check_output
+        run: |
+          cd ./run_on_gha/rs_test_project 
+          rm Outputs/DebugLog.txt
+          bash check_output.bash
+        # DebugLog contains addresses, changes every run