Build System Rework

[dudoslav]

This PR reworks the build system in order to properly build and package TileDB-VCF for all platforms (Linux, MacOS) and all package managers (PyPI and Conda).

The main goals of this PR:

• Divide build into TileDB-VCF and TileDB-VCF-Py
• TileDB-VCF needs to build as shared object and as a static library
• TileDB-VCF needs to internally link with shared libraries or static libraries (fmt, spdlog, cli11)
• TileDB-VCF-Py needs to properly package for PyPI, currently statically linked wheel
• TileDB-VCF-Py conda packaging logic, only build TileDB-VCF-Py and dynamically link to TileDB-VCF (that also uses shared libs)

Windows build and package does not work yet.