IGNITE-11653: CPP Fix compiler warnings, treat warnings as errors

[isapego]

Added flags for all supported compilers to treat warnings as errors and fixed all found errors.

The "failure-on-warning" mode is introduced for CMake. It is disabled by default to improve user experience, but can be enabled with -DWARNINGS_AS_ERRORS=ON CMake flag and is encouraged for the use by developers as it is now used for all CMake TeamCity runs.

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