Allow passing libraries to make_test that need to be linked to the

[jhert0]

test

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This change is 

[GrayHatter]

this doesn't seem like the right way +@robinlinden knows cmake better than I do

Reviewable status: 1 file needs 2 more reviewers, 1 assignee LGTMs are missing, missing Admin LGTM at current revision.

[robinlinden]

The proper thing would be to, instead of doing things like #include "../src/updater.c to test the updater, you do something like target_link_library(test_updater library_containing_updater), and you'd get all dependencies and header files automagically.

Basically, we'd have to rewrite our main CMakeLists to create a utox_core library or something similar.

[GrayHatter]

@robinlinden meson when?

[robinlinden]

This is better than it was before.

[ghost]

@endoffile78 please rebase and please give some sort of summary in commit message of why your shit is great.