Auto offset setup

[FlyingLotus1983]

Automatically update tool offsets when tools are changed.

NOTE: This may be a moot point if a fixed end-effector is used. There are, however, users that do have interchangeable tools, so it's not moot for everyone, just those with a fixed non-interchangeable tool system.

Current Status:

• Mostly just a proof of concept, but working, aside from hardcoded radiuses and the bug in #2. Will need some polish and better error handling if it's something we actually want to use.

Sub-Tasks:

• Get auto-offset setup working well enough that an end user can comfortably use it.
• Nozzle radiuses are currently hardcoded. These should probably be specified in machine.xml, or inferred from some other method.

[vonnieda]

@FlyingLotus1983 This is referring to the automatic tool offset adjustment stuff I threw in. It's moot with EE2 because the offsets should not change with a head that has fixed tools. Although if they do, more likely for the dispenser, this would still be useful.

The hardcoded radiuses are just that. They'll either need to be broken out into the machine.xml or inferred using some other method.

[FlyingLotus1983]

Thanks @vonnieda , I updated the description. Feel free to add/expand if you'd like. What would also be helpful is to note here what the current status is, I believe this is somewhat working right now? Which pieces are working, and what is left to do? We can list each of those as sub-tasks, ideally.