DualSense Prompts

Reworked the button icons from scratch:

• now it uses the vanilla PS4 icons for the main 4 buttons, but recolored to match DualSense (this allows the "press" icons to be slightly inclined);
• the R1, R2, L1 and L2 triggers now are colored in black, to match most DualSenses models;
• the "start" and "share" icons have been reworked to match DualSense's new prompts.
• better quality for the button icons in general;
• more cohesive placement (I literally counted the pixels to match where each button icon should be).

Future plans for 3.0:

• Rework the touchpad icon (the small one) to be higher quality;
• adjust the 4 main button icon colors (the grey ones) to be cleaner on screen.