windowrules: rewrite completely (#12269)

Reworks the window rule syntax completely

---------

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

src/desktop/rule/windowRule/WindowRule.hpp

@@ -0,0 +1,37 @@
+#pragma once
+
+#include "../Rule.hpp"
+#include "../../DesktopTypes.hpp"
+#include "WindowRuleEffectContainer.hpp"
+#include "../../../helpers/math/Math.hpp"
+
+#include <unordered_set>
+
+namespace Desktop::Rule {
+    constexpr const char*   EXEC_RULE_ENV_NAME = "HL_EXEC_RULE_TOKEN";
+
+    std::optional<Vector2D> parseRelativeVector(PHLWINDOW w, const std::string& s);
+
+    class CWindowRule : public IRule {
+      private:
+        using storageType = CWindowRuleEffectContainer::storageType;
+
+      public:
+        CWindowRule(const std::string& name = "");
+        virtual ~CWindowRule() = default;
+
+        static SP<CWindowRule>                                  buildFromExecString(std::string&&);
+
+        virtual eRuleType                                       type();
+
+        void                                                    addEffect(storageType e, const std::string& result);
+        const std::vector<std::pair<storageType, std::string>>& effects();
+        const std::unordered_set<storageType>&                  effectsSet();
+
+        bool                                                    matches(PHLWINDOW w, bool allowEnvLookup = false);
+
+      private:
+        std::vector<std::pair<storageType, std::string>> m_effects;
+        std::unordered_set<storageType>                  m_effectSet;
+    };
+};