BBH pipeline: store target params, continue from evolution data

[nilsvu]

Proposed changes

This enables PBJ by allowing to start from evolution data. To make sure all the parameters are consistent between the stopped and the continued evolution, the target parameters (like mass ratio and spins) are stored in input files and used to compute things like constraint damping parameters. The target parameters are also used in ID control and ecc-control.

Upgrade instructions

Code review checklist

• The code is documented and the documentation renders correctly. Run
  make doc to generate the documentation locally into BUILD_DIR/docs/html.
  Then open index.html.
• The code follows the stylistic and code quality guidelines listed in the
  code review guide.
• The PR lists upgrade instructions and is labeled bugfix or
  new feature if appropriate.

Further comments

[nilsvu]

@iago-mendes this PR promotes target params for ID control and ecc-control to input file metadata, could you check that I didn't break anything in the control loop?