F bimanual teleop tweaks

[chrisw-shadow]

Proposed changes

Some tweaks, mostly to launch files to enable proper launching of a bimanual system.

Also duplicated the controllers' configs so that the 2nd arm doesn't complain about it

Types of changes

What types of changes does your code introduce?

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist

Put an x in the boxes that apply. You can also fill these out after creating the PR. This is a reminder of what we should look for before merging this code. I have:

• Read and follow the contributing guidelines.
• Checked that all tests pass with my changes
• Added tests (automatic or manual) that prove the fix is effective or that the feature works
• Added necessary documentation (if appropriate)
• Added the corresponding license to each file and add the current year of any one that you modified.
• Tested on real hardware (if appropriate)

[toliver]

Are we being consistent with the namespace naming?
I see some called hand_0, but then we call these a0 instead of arm_0.
I can't remember what was our agreed convention on this.

[chrisw-shadow]

ye I think you're right here, changed them to arm_0 and arm_1. although I don't think it actually matters in this case cos the namespacing doesnt actually do anything to the description that gets loaded (other than breaking the convention)