add documentation for cmake install

[MCWertGaming]

We should add documentation on installing the library using cmake:

• install on linux as shared library
• use cpp-terminal as shared library on linux
• install cpp-terminal as shared library on windows
• using shared libraries on windows
  • place into shared include dir?
  • place next to the dll
  • static linking
  • other methods? Maybe visual studio stuff
• MacOS specific things?
• cross platform approach for managing cpp-terminal using cmake
  • git submodules
  • cmake managed
  • mamba?
  • other ways / package managers?