Add FL-Esports FL980 keyboard

[iglooom]

Description

FL-Esports FL980 3-mode keyboard MCU: SN32F248BF

For some reason, I can't use the default RGB matrix driver for this keyboard. Tried different options without luck, LEDs always had some glow and incorrect colors, even when should be completely off. I used the custom driver with PWM on rows instead of columns, but for smooth RGB, reading keys performed only twice inside RGB cycle. Good enough for me.

Types of Changes

• [ ] Core
• [ ] Bugfix
• [ ] New feature
• [ ] Enhancement/optimization
• [x] Keyboard (addition or update)
• [ ] Keymap/layout/userspace (addition or update)
• [ ] Documentation

[dexter93]

The reason is ROW2COL. Currently working on improvements there, but lacking testers. Please try this version of the driver on top of sn32_develop. It should improve the RGB performance there significantly. Ping me on discord with results, would like to avoid adding a spinoff driver in the keyboard tree when there is no reason to