Add pre-commit and exercise on CI

[raulcd]

We have already added Clang and CMake format in:

• Add clang format #4
• Add CMake format #5

We should add pre-commit to perform the linter on CI.

We can also add yaml format as discussed here:
#10 (comment)

[Fokko]

This was also suggested by @pitrou in #5 (comment)

[zhjwpku]

I think this issue can be closed as we have already done that ;)

[raulcd]

Yes, it was supposed to be closed with:
#16
Thanks @zhjwpku