* Adds support for compiling on Ubuntu 20.04 by lowering required cmake version to 3.16 (from 3.22) and removing the "set(CMAKE_C_STANDARD 20)" line which is not supported by cmake 3.16
* Adds back the CMAKE_C_STANDARD flag but now sets it to 11, the highest version supported by cmake 3.16
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Co-authored-by: Marek Kraus <gamelaster@users.noreply.github.com>
