[Keymap] Add Kyria keymap (#9224)

* Add Kyria keymap

* clean split hand detection code

* rename "joystick" to "thumbstick"

* thumbstick overhaul

* removed angle correction, seems buggy

* save some memory

* Remove deprecated config option

* Use the correct types for getting host led states

* Fix include path

* Made .h files for encoder and oled code

* Increase speed cap on thumbstick

keyboards/kyria/keymaps/gotham/keycodes.h

@@ -0,0 +1,16 @@
+#pragma once
+
+#include "quantum.h"
+
+enum layers { _QWERTY = 0, _LOWER, _RAISE, _ADJUST };
+
+enum custom_keycodes {
+    ENC_MODE_L = SAFE_RANGE,
+    ENC_MODE_R,
+    TMB_MODE,
+};
+
+#define ESC_RAISE LT(_RAISE, KC_ESC)
+#define BSLS_RAISE LT(_RAISE, KC_BSLS)
+#define SFT_QUOT MT(MOD_RSFT, KC_QUOT)
+#define CTL_MINS MT(MOD_RCTL, KC_MINS)