[Keymap] New keymap for Quefrency 65% with split backspace, RGB, media keys, mouse keys (#5717)

* Add initial keyboard layout for Quefrency

* Add RGB config and keybindings for Quefrency

* Move Quefrency wheel keys to more convenient place

* Actually switch from serial to I2C

Commit 64708c6 updated the comment, not the #define. D'oh!

keyboards/keebio/quefrency/keymaps/bcat/config.h

@@ -0,0 +1,24 @@
+#pragma once
+
+/* Use I2C rather than serial communicaiton to reduce latency. */
+#define USE_I2C
+
+/* Turn off RGB lighting when the host goes to sleep. */
+#define RGBLIGHT_SLEEP
+
+/* Use an extra LED on the right side since it's wider on the 65% PCB. */
+#undef RGBLED_NUM
+#define RGBLED_NUM 17
+
+/* Set up RGB lighting so it works with either side as master. */
+#define RGBLED_SPLIT { 8, 9 }
+
+/* Make mouse operation smoother. */
+#define MOUSEKEY_DELAY 0
+#define MOUSEKEY_INTERVAL 16
+
+/* Lower mouse speed to adjust for reduced MOUSEKEY_INTERVAL. */
+#define MOUSEKEY_MAX_SPEED 7
+#define MOUSEKEY_TIME_TO_MAX 150
+#define MOUSEKEY_WHEEL_MAX_SPEED 4
+#define MOUSEKEY_WHEEL_TIME_TO_MAX 150