fix: remove non-ros dependency

[incebellipipo]

Solves #5

It is not ready for merge yet; we can discuss the ways to handle SDK dependency before it.

[incebellipipo]

What about adding

include(FetchContent)
if (NOT TARGET qualisys_cpp_sdk)
  message(STATUS "${PROJECT_NAME}: `qualisys_cpp_sdk` targets not found. Attempting to fetch contents...")
  FetchContent_Declare(
    qualisys_cpp_sdk
    GIT_REPOSITORY https://github.com/qualisys/qualisys_cpp_sdk
    GIT_TAG        master
  )
  FetchContent_MakeAvailable(qualisys_cpp_sdk)
else()
  message(STATUS "qualisys_cpp_sdk: `qualisys_cpp_sdk` targets found.")
endif()

to the cmakelists.txt ?

[incebellipipo]

This works like that. Commit messages got a little messy though. If you find this approach good enough, I can clean up the commit messages and make another PR, or somehow update this one.

[fmrico]

Hi @incebellipipo

LGTM, go ahead. Is the PR ready to merge?

Thanks!!

[incebellipipo]

Nööö!!! 😆

There are too many weird commits in it. I will properly do it and create another pull request. I will turn this into a draft for now.