The development branch of the PSA cryptography repository is aimed to contain only code specific to the repo, not the files copied from the Mbed TLS repository. That's the purpose of the main branch to contain the content of the development branch and the files copied from a given commit of the Mbed TLS repository.
The purpose of this task is to create the main branch, document it together with the development branch in a BRANCHES.md file and describe the process to update it from a new commit of the Mbed TLS repository.
The development branch of the PSA cryptography repository is aimed to contain only code specific to the repo, not the files copied from the Mbed TLS repository. That's the purpose of the main branch to contain the content of the development branch and the files copied from a given commit of the Mbed TLS repository.
The purpose of this task is to create the main branch, document it together with the development branch in a BRANCHES.md file and describe the process to update it from a new commit of the Mbed TLS repository.