CMakePM: Add installDir CMakePresets support

Is part of CMakePrests v3, and slipped at the implementation time.

Task-number: QTCREATORBUG-24555
Change-Id: Id3ce90c0a979d44287fc03ae1dd49a64e964cdf2
Reviewed-by: <github-actions-qt-creator@cristianadam.eu>
Reviewed-by: Alessandro Portale <alessandro.portale@qt.io>

src/plugins/cmakeprojectmanager/presetsparser.h

@@ -100,6 +100,7 @@ public:
     std::optional<ValueStrategyPair> toolset;
     std::optional<QString> toolchainFile;
     std::optional<QString> binaryDir;
+    std::optional<QString> installDir;
     std::optional<QString> cmakeExecutable;
     std::optional<CMakeConfig> cacheVariables;
     std::optional<QHash<QString, QString>> environment;