refactor: Replace superseded key names

Replace deprecated key names (LCTL, NUM_0, NUM_1).

Replace abbreviated names with fully qualified names (LCTL, RGUI, NUM_0, NUM_1).

Follow-up to #21.

app/src/behaviors/behavior_hold_tap.c

@@ -429,7 +429,8 @@ static int position_state_changed_listener(const struct zmk_event_header *eh) {
 }
 
 static inline bool only_mods(struct keycode_state_changed *ev) {
-    return ev->usage_page == HID_USAGE_KEY && ev->keycode >= LCTL && ev->keycode <= RGUI;
+    return ev->usage_page == HID_USAGE_KEY && ev->keycode >= LEFT_CONTROL &&
+           ev->keycode <= RIGHT_GUI;
 }
 
 static int keycode_state_changed_listener(const struct zmk_event_header *eh) {

app/src/ble.c

@@ -572,11 +572,11 @@ bool zmk_ble_handle_key_user(struct zmk_key_event *key_event) {
         return true;
     }
 
-    if (key < NUM_1 || key > NUM_0) {
+    if (key < NUMBER_1 || key > NUMBER_0) {
         return true;
     }
 
-    u32_t val = (key == NUM_0) ? 0 : (key - NUM_1 + 1);
+    u32_t val = (key == NUMBER_0) ? 0 : (key - NUMBER_1 + 1);
 
     passkey_entries[passkey_digit++] = val;
 

app/src/hid.c

@@ -78,16 +78,16 @@ int zmk_hid_implicit_modifiers_release() {
 }
 
 int zmk_hid_keypad_press(zmk_key code) {
-    if (code >= LCTL && code <= RGUI) {
-        return zmk_hid_register_mod(code - LCTL);
+    if (code >= LEFT_CONTROL && code <= RIGHT_GUI) {
+        return zmk_hid_register_mod(code - LEFT_CONTROL);
     }
     TOGGLE_KEYPAD(0U, code);
     return 0;
 };
 
 int zmk_hid_keypad_release(zmk_key code) {
-    if (code >= LCTL && code <= RGUI) {
-        return zmk_hid_unregister_mod(code - LCTL);
+    if (code >= LEFT_CONTROL && code <= RIGHT_GUI) {
+        return zmk_hid_unregister_mod(code - LEFT_CONTROL);
     }
     TOGGLE_KEYPAD(code, 0U);
     return 0;