windowrules: rewrite completely (#12269)

Reworks the window rule syntax completely

---------

Co-authored-by: Mihai Fufezan <mihai@fufexan.net>

src/desktop/rule/matchEngine/WorkspaceMatchEngine.hpp

@@ -0,0 +1,16 @@
+#pragma once
+
+#include "MatchEngine.hpp"
+
+namespace Desktop::Rule {
+    class CWorkspaceMatchEngine : public IMatchEngine {
+      public:
+        CWorkspaceMatchEngine(const std::string&);
+        virtual ~CWorkspaceMatchEngine() = default;
+
+        virtual bool match(PHLWORKSPACE ws);
+
+      private:
+        std::string m_value = "";
+    };
+}