Explain how to tweak the service file for Linux

[Ryuno-Ki]

No description provided.

[kootenpv]

I think we should probably move this to a separate README specifically for the details?

Btw, if you install sysdm in the same virtualenv before using sysdm d, then it will automatically work by just running sysdm create (as it automatically uses the already activated virtualenv/python)

[Ryuno-Ki]

I did.
Dependencies for projects are installed in the same virtualenv as the project (to avoid conflicts between projects).
However, the target was outside the virtualenv.

I'm using the standardlib virtualenv command to create it (instead of one of the pipenv etc. out there).

[kootenpv]

But so if you would install sysdm in that venv wouldn't it work then 🤔?

[Ryuno-Ki]

🤷

I can tell with another package if you want me to.
Shall I split this PR into one part regarding the Exec stuff and one for enabling the service?

[kootenpv]

Whatever is more convenient! I only saw the notification now :(