RSDK-8460 - Modularize the xarm driver and remove it from RDK

[nfranczak]

This PR removes the xArm driver within the RDK.
Once this is merged 1/2 of the work needed for this ticket will be done.
The other half is the migration script which will convert relevant configs to use the module.
Timing is an important consideration here. If this PR is merged before this upcoming Tuesday 11.26.24 then when the new RDK is cut on Tuesday, app.viam will no longer give the user the option of choosing between the module and RDK object.
The migration will be run on Tuesday, shortly after we have a new release.

Testing that has been done on the xArm module:

1. the module is used by the wine-pouring-demo. In the demo's script I use CurrentInputs and the DoCommand to open/close the gripper as well as set the speed and acceleration. The script also uses the motion service's DoCommand to execute a plan so MoveThroughJointPositions is tested. I also have used the control tab on app.viam to move the robot and have confirmed that functionality remains for JointPositions and MoveToJointPositions.
2. Yesterday (11.20.24) I ran a golang script which used EndPosition and MoveToPosition and confirmed that functionality remains.
3. on app.viam in miko's office/xarm-module-testing I have also setup a xArm6 robot which uses the module. With this robot I have run both python and golang scripts to ensure that arm methods continue to function, however this was done back in September.

Testing I have not done:

1. I have not tested this module on the xArm7 or the lite6 since I do not have access to them in the NYC office.

[biotinker]

This rather defeats the purpose of putting this in a module, no?

[biotinker]

1. arm registration should not attempt to register the module; the module itself should take care of that.
2. I believe the order of operations described is incorrect. Presumably we will want to migrate all user configs to the module, then merge this, rather than the other way around, no?
3. please detail testing done on this module

[nfranczak]

1. arm registration should not attempt to register the module; the module itself should take care of that.

My fault, will remove.

2. I believe the order of operations described is incorrect. Presumably we will want to migrate all user configs to the module, then merge this, rather than the other way around, no?

If I run the migration and also remove the xArm RDK object today, then users can still continue to choose the xArm RDK object when setting up an arm up until Tuesday since the version of RDK that app.viam uses is not aware that the xArm RDK object no longer exists.

3. please detail testing done on this module

Will update the PR's readme.