Changes to mCBM setups for the Ni and Au runs of mCBM 2022

- Add setup 2022_08, refs #2516
- Use mTOF v21h in setup 2022_08, refs #2516
- Introduce preliminary Nickel setup for May 2022
- Rename Nickel setup file and use mTOF 21h in it, refs #2520
- Update subsystems in Nickel setup, refs #2520
- Add dedicated setup for Au run of June