AMIMethod not restartable

Summary

Various AMIMethods do not output their optional inputs.

Steps to reproduce

E.g. create a blockMeshDict a cyclicAMI

    AMIMethod       nearestFaceAMI;
    maxDistance2    1e-10;      // optional max search distance (squared)

run blockMesh and look at the boundary file.

Environment information

• OpenFOAM version : v2112

@andy