Use meson for building project
This migrates the build system for the project to meson. I felt that the complexity of all the things we wanted to add/change exceeded my desire to continue using/supporting make, and I find meson much easier to deal with. For example, I was able to reproduce about 95% of the Makefile's functionality in about 5 minutes writing a new meson.build... (the remaining 5% was just getting the scdoc stuff nailed down).
I dropped the version info from the manpage (cc @Jarrah, since you added that). There was not a great way to implement this in make, or with meson without it getting complicated (afaik..) To help fill the gap, I added a -V/--version option to the app to print the version. The app will also print the version on startup (when started with --verbose).
The way tests are run was changed as well, and I think it's much nicer. (note that the luks test requires root..):
❯ ninja -C _build test
ninja: Entering directory `_build'
[0/1] Running all tests.
1/4 Functional test - keyscript, physical keyboard input OK 11.01s
2/4 Functional test - keyscript, mouse keyboard input, letters OK 11.03s
3/4 Functional test - keyscript, mouse keyboard input, symbols OK 11.03s
4/4 Functional test - luks SKIP 3.19s
Summary of Failures:
4/4 Functional test - luks SKIP 3.19s
Ok: 3
Expected Fail: 0
Fail: 0
Unexpected Pass: 0
Skipped: 1
Timeout: 0
Full log written to /home/clayton/src/osk-sdl/_build/meson-logs/testlog.txt
❯ sudo ninja -C _build test
[sudo] password for clayton:
ninja: Entering directory `_build'
[0/1] Running all tests.
1/4 Functional test - keyscript, physical keyboard input OK 11.04s
2/4 Functional test - keyscript, mouse keyboard input, letters OK 11.03s
3/4 Functional test - keyscript, mouse keyboard input, symbols OK 11.03s
4/4 Functional test - luks OK 14.80s
Ok: 4
Expected Fail: 0
Fail: 0
Unexpected Pass: 0
Skipped: 0
Timeout: 0
Full log written to /home/clayton/src/osk-sdl/_build/meson-logs/testlog.txt