Add python black formatter

Description

See RFC 3 for more details.

Type

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Issue(s)

Related MRs

Testing

Usual pipelines and extra check on https://gitlab.com/qblox/packages/software/qblox_instruments/-/jobs/4528841358 introduced to check the formatting.

Notes

Merge checklist

• Cleaned up code (correct alligment/spacing/code-style, no dead code, etc).
• Merge request targets development branch.
• Assigned assignee (you) and reviewers (team-members).
• Merge request has been reviewed by at least one team-members.
• All pipelines pass, including manually triggered ones.