New package: ThemeChanger-0.10.1

[ALEX11BR]

So here I come again, trying to get my app added to your repos, this time a slightly newer version.
For the previous attempt I made the suggested change in regards to checksums. While I also received a suggestion of moving the library files to /usr/lib, the library file present under /usr/share/... is actually a Python C module that the app uses, and I think it should stay there with its other regular Python module buddies. An observed issue is that Python C modules cross-compilation is broken under meson (mesonbuild/meson#7049)...

General

• This is a new package and it conforms to the quality requirements

Have the results of the proposed changes been tested?

• I use the packages affected by the proposed changes on a regular basis and confirm this PR works for me
• I generally don't use the affected packages but briefly tested this PR

[Chocimier]

it should stay there with its other regular Python module buddies

No, all modules should be moved to /usr/lib then. Redefine datadir or patch to use libdir or whatever would work here.