Add new parameters OFFBODY and OFFBODYTRIM to cam2cam (#5704)

* Updated cam2cam to incorporate new parameters OFFBODY and OFFBODYTRIM.

* Updated examples and documentation addressing OFFBODY and OFFBODYTRIM parameters. Addresses #3602.

* Minor corrections to cam2cam documentation. Addresses #3602.

* Updated links in cam2cam documentation. Addresses #3602.

* Updated FunctionalTestsCam2cam.cpp to incorporate OFFBODY and OFFBODYTRIM parameters.

* Tests OFFBODY and OFFBODY trim. Addresses #3602.

* Added OFFBODY and OFFBODYTRIM parameters to cam2cam. Added tests and updated documentation. Addresses issue #3602.

* Changes made per feedback in PR. Moved xform from .cpp to .h.

* Moved Cam2CamMapper class from cam2cam.h to FunctionalTestsCam2cam.cpp.

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Co-authored-by: kledmundson <k.l.edmundson@gmail.com>
Co-authored-by: kledmundson <6842706+kledmundson@users.noreply.github.com>