Allow skipping tests using pytest-style arguments/DSL

[thesamesam]

Describe the bug

It's not possible to easily select tests to skip from the command line when invoking meson test.

For example, Pango has some precision tests which we downstream in Gentoo expect to fail on 32-bit architectures like x86 (https://bugs.gentoo.org/836317). We want to skip certain tests for one of two builds done using the same source dir (obviously Meson does out-of-source builds) but can't.

I had a brief discussion with @eli-schwartz about it and it was suggested that meson might be able to support pytest's nice DSL for selecting/deselecting tests, e.g. pytest -k "not foo".

[thesamesam]

Maybe a dupe of #6999. This syntax is being discussed in #11502 anyhow.