Add Skew map to BCO

[knelli2]

Proposed changes

Adds the Skew map to the BinaryCompactObject domain. Sets it to None in all input files for now until a control system is written for it.

Part of #4603.

Upgrade instructions

When using the BinaryCompactObject domain creator, you must add the following option to the time depndent options:

  TimeDependentOptions:
    SkewMap:
      InitialValuesY: [0.0, 0.01, 0.0]
      InitialValuesZ: [0.0, 0.01, 0.0]

It has the same capabilities to be None or from a volume file as the other time dependent map options.

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

Depends on and includes #6446.