Extend Makefile with installation and test targets

[MattHag]

Information

• Solaar version: 1.1.11rc4

Is your feature request related to a problem? Please describe.
The Solaar installation with all its dependencies (pip, apt, udev etc.) is cumbersome. Although some setup steps for GItHub CI exists, they are not usable for local setup of Solaar.

Describe the solution you'd like
Move the setup commands into a Makefile and use the targets in GitHub workflow files. Thus, the commands are in a single place and also usable for local setups.

Additional context
This extends #2263

[pfps]

Good idea. It might be reasonable to set up a bunch of small changes and have 1.1.12 come out only a few weeks after 1.1.11.

[MattHag]

I think right after 1.1.11 there should be most of the refactoring, cleanup and modernization tickets tackled. After that new features can be added and tests can be written in parallel at any time.

[pfps]

This sounds like a good plan. Tackle a bunch of small-to-medium tasks to clean up the code and set up better infrastructure. Then 1.1.12 can be pushed out.

[MattHag]

In addition to that change, the setup instructions need to be revised, restructured and simplified.

• The existing structure is hard to understand.
• It is rather uncertain which setup steps are required for macOS, next to brew.
• The optional and required steps are mixed in a huge paragraph.

As minor support for macOS was added and Windows might be supported as well, the setup instructions need to be split according to OS. They should be clear for an average user, who is able to find the shell and know their operating system. (optional) With a small troubleshooting section, this should also lead to fewer/shorter support request.

Install from source using Makefile

With this change, the installation for Ubuntu using the latest source code should reduce to the command
make install_ubuntu
in the Solaar root directory. It installs the apt and pip dependencies and installs the udev rule.

Developers run it with additional parameters to install test dependencies etc.
make install_ubuntu PIP_ARGS=."[test]"

[pfps]

Yes, more makefile entries would be useful.

[MattHag]

I don't know other distributions like Fedora, but it should be easy for developers to extend that Makefile and make Solaar installation for development a no brainer.

In the end the Makefile could even be OS agnostic by detecting it with uname
https://stackoverflow.com/questions/714100/os-detecting-makefile