Add unity build support

CMakePresets.json

@@ -107,6 +107,10 @@
             "name": "dev-qt6",
             "configurePreset": "dev-qt6"
         },
+        {
+            "name": "unity",
+            "configurePreset": "unity"
+        },
         {
             "name": "dev-clang",
             "configurePreset": "dev-clang"