Describe the feature

Expand the newly added frame positioning feature to the default (non-plugin) Cell frames. This is a frequent request which likely wont be added by ender, hence outsourcing it to the plugin would be a great workaround solution.

Describe the implementation

By using the already built framework for the positioning module, I would like to be able to also set coordinate position for the party/raid/spotlight/npc frames in a similar fashion. For party/raid, I believe the appropriate frame would be CellAnchorFrame. I am aware that this is not necessarily a feature that directly benefis the unitframes plugin but it may prove to be a valuable addition and pull factor as a highly requested feature of the base addon