FR - Custom Field Upload

[ariesninjadev]

Is your feature request related to a problem? Please describe.
People who want to use Shuffleboard for off-season games have a hard time due to their inability to use the games' field image.

Describe the solution you'd like
A best-case would be that when right clicking on a field in Shuffleboard, the "Game" dropdown would contain an extra dropdown like "Add Custom" that allows the user to upload an image, select the start and end points of the field, and the field size (similar to how Limelight web does it).

Describe alternatives you've considered
I spent the last few hours compiling a custom version of Shuffleboard that removes the fieldImages dependency and brings back the field images and configs to the limelight base plugin resources. Then I just added the specific field i wanted. Obviously, this solution only works for me, and it would probably be beneficial for anyone to be able to use a custom image if they want to.