Some small changes to squeekboard-test-layout while learning rust:
- added a short about text, usage and version information using the
clapcrate (which makes this really comfortable)
- version information is copied from the
Test result: OK, as feedback if no errors are found instead of nothing at all
@dorota.czaplejewicz: Didn't know if it's OK to add
clap as another dependency, but I thought it would be better for layout maintainers to have at least some usage information and feedback. If you think this doesn't fit in, just delete the MR.