FEAT: build system based on CMake

[krzycz]

Key requirements:

• cross-platform build system, supporting Linux and Windows
• automated generation of Linux makefiles & VS projects/solutions
• build configuration based on compiler version/features, installed libraries, etc.
• support for Valgrind, ASan, etc.
• proper dependency handling
• proper handling of user-defined CFLAGS/CPPFLAGS and distro-specific build flags
• out-of-tree build support
• parallel compilation
• improved parallel test execution
• support for out-of-tree test execution
• separate debug/non-debug builds
• make rpm, make dpkg
• improved API/library versioning