FEATURE REQUEST: allow D-Brake's handle to be adjusted / rotate

[cheuksing]

The Issue

Sometimes buttons angle are fixed, and the D BRAKE handle may pointing to a wierd angle.

For example,

1. In enclosure that use snap-in buttons, the snap things avoids a button to be freely rotate. One example is Qanba crystal fightstick.
   • this is a pic from focus attack of its artwork print, you can see the button cutout are not perfect circle.
   • https://focusattack.com/artwork-print-and-cut-for-qanba-crystal-q2-glow/
2. In keyboard-like controller, where the keyboard switches directly attach to the pcb, can't rotate

Suggestion

Split the handle and bottom part of D-BRAKE into 2 parts, and connect them with a standard fastener.

This allow

1. adjust it to their personal preference or fit their own stick.
2. easier to support more switches / buttons. We only need to create the bottom part, all handles can be shared and reuse.