[compiler-rt][scudo] Add CMake presets for standalone builds (#221089) Add CMakePresets.json under compiler-rt to configure and test Scudo standalone without requiring a full LLVM monorepo build. Includes scudo-debug, scudo-release, and test presets. Used Gemini to clean up and make the presets more generalized. Assisted-by: Gemini GitOrigin-RevId: eb8cddbf1757653499264af4d701ebe8104002c9