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?