add decomposition unittests to CI

Author: taminob

.github/workflows/reusable-mlir-tests.yml

@@ -103,9 +103,12 @@ jobs:
       - name: Build MLIR lit target
         run: cmake --build build --config ${{ matrix.coverage && 'Debug' || 'Release' }} --target mqt-core-mlir-lit-test-build-only
 
-      - name: Build MLIR unittests
+      - name: Build MLIR unittests (translation)
         run: cmake --build build --config ${{ matrix.coverage && 'Debug' || 'Release' }} --target mqt-core-mlir-translation-test
 
+      - name: Build MLIR unittests (decomposition)
+        run: cmake --build build --config ${{ matrix.coverage && 'Debug' || 'Release' }} --target mqt-core-mlir-decomposition-test
+
       # Test
       - name: Run lit tests
         run: cmake --build build --config ${{ matrix.coverage && 'Debug' || 'Release' }} --target mqt-core-mlir-lit-test