[Keymap] Add my personal userspace and update my keymaps (#5128)

* Add billypython userspace and dz60 keymap

* Disable Bootmagic in dz60:billypython keymap

* Update whitefox:billypython keymap with userspace changes

Also remove numpad layer

users/billypython/billypython.h

@@ -0,0 +1,34 @@
+#pragma once
+
+#include "quantum.h"
+
+#ifdef TAP_DANCE_ENABLE
+  #include "tap_dance.h"
+#endif
+
+#ifdef LAYER_FN
+  #define FN      MO(L_FN)
+  #define FN_CAPS LT(L_FN, KC_CAPS)
+  #define FN_FNLK TT(L_FN)
+#endif
+
+#define TOP     LCTL(KC_HOME)
+#define BOTTOM  LCTL(KC_END)
+
+enum keycodes_user {
+  CLEAR = SAFE_RANGE,
+
+  RANGE_KEYMAP,
+};
+
+enum layers_user {
+  L_BASE,
+#ifdef LAYER_FN
+  L_FN,
+#endif
+
+  L_RANGE_KEYMAP,
+};
+
+bool process_record_keymap(uint16_t keycode, keyrecord_t *record);
+uint32_t layer_state_set_keymap(uint32_t state);