CLion 2025.3 makes Nova engine default, adds Constexpr Debugger

CLion 2025.3 is a major update that assigns CLion Nova as the default C and C++ language engine, significantly increasing responsiveness and reducing memory consumption compared to CLion Classic. This release introduces the Constexpr Debugger, offering detailed insights into compile-time evaluations unique to this version. Expanded support for the Debug Adapter Protocol further broadens debugging integrations.