- _CRT_SECURE_NO_WARNINGS suppresses warnings for "unsafe" fopen, strcpy etc.
- int -> size_t

See !92 for the relevant issue.

- Fix GTest spelling in test/CMakeLists.txt
- Restrict vcpkg triplet to release
- Add set(CMAKE_POSITION_INDEPENDENT_CODE ON)
- Include of <gtest/gtest.h> in tests instead of smaller headers
- Add boost options to CMakeLists.txt

This makes handling linker errors on Windows related to the protobuf
sources easier to handle.

- add generated protobuf source directory to global include folders

On Windows this does not compile without. On Linux, it should not hurt.

Linking against caosdb should achieve the same.

This is experimental.

This was necessary for gcc prior to 9.1 and is no longer necessary.

This fixes issue #88 on Win32

boost::beast is header-only, so find_package will fail.

- Only use required components of boost
- Link automatically to ${Boost_LIBRARIES}

- Was temporarily disabled for conan 2

This fixes error LNK2019: unresolved external symbol errors using msvc

Partially addresses issue #34