[TF-M] Static check framework for TF-M

Hi all,

Hugo L'Hostis and I have written a series of patches to enable various checks that can be done locally before committing the code, they will be added in the tf-m-tools repository. The patches are the following, any comment is welcome:

cppcheck: https://review.trustedfirmware.org/c/TF-M/tf-m-tools/+/10009/8

clang-format: https://review.trustedfirmware.org/c/TF-M/tf-m-tools/+/10463/2

copyright headers: https://review.trustedfirmware.org/c/TF-M/tf-m-tools/+/10464/2

Regards, Salome