- Gives a better overview of CI and the different checks, without going
into the logs too deeply.
- Cache: use a unique key for each run, and remove 'restore key' since it
could potentially retrieve the wrong bitstream. The stragegy should be
to fail if a cache is not present, not fetch a bitstream from a
different build.
- Exclude splint from CI, so we make another target for it "splint",
which we might include in the "check" target later.
- Move the analysis runs earlier in CI so they, including indentation
checks, fail first.
- Include printouts of hashen in check-binary-hashes to easier see
what the digest are if it fails in CI.
