Keyboard improvements (#240)

- Renamed various keyboard functions so it's easier to differentiate hardware versus software keyboard functionality
- Created `Tactility/lvgl/Keyboard.h` as a proxy  for the internal `Gui` service.
- Implemented `tt_lvgl_keyboard.h` in `TactilityC`.

Tactility/Source/service/gui/Keyboard.cpp

@@ -1,7 +1,7 @@
+#include "Tactility/lvgl/Keyboard.h"
 #include "Tactility/Check.h"
-#include "Tactility/service/gui/Gui_i.h"
-#include "Tactility/lvgl/LvglKeypad.h"
 #include "Tactility/lvgl/LvglSync.h"
+#include "Tactility/service/gui/Gui.h"
 
 #include <Tactility/TactilityConfig.h>
 
@@ -11,19 +11,19 @@ extern Gui* gui;
 
 static void show_keyboard(lv_event_t* event) {
     lv_obj_t* target = lv_event_get_current_target_obj(event);
-    keyboardShow(target);
+    softwareKeyboardShow(target);
     lv_obj_scroll_to_view(target, LV_ANIM_ON);
 }
 
 static void hide_keyboard(TT_UNUSED lv_event_t* event) {
-    keyboardHide();
+    softwareKeyboardHide();
 }
 
-bool keyboardIsEnabled() {
-    return !lvgl::keypad_is_available() || TT_CONFIG_FORCE_ONSCREEN_KEYBOARD;
+bool softwareKeyboardIsEnabled() {
+    return !lvgl::hardware_keyboard_is_available() || TT_CONFIG_FORCE_ONSCREEN_KEYBOARD;
 }
 
-void keyboardShow(lv_obj_t* textarea) {
+void softwareKeyboardShow(lv_obj_t* textarea) {
     lock();
 
     if (gui->keyboard) {
@@ -34,7 +34,7 @@ void keyboardShow(lv_obj_t* textarea) {
     unlock();
 }
 
-void keyboardHide() {
+void softwareKeyboardHide() {
     lock();
 
     if (gui->keyboard) {
@@ -48,7 +48,7 @@ void keyboardAddTextArea(lv_obj_t* textarea) {
     lock();
     tt_check(lvgl::lock(0), "lvgl should already be locked before calling this method");
 
-    if (keyboardIsEnabled()) {
+    if (softwareKeyboardIsEnabled()) {
         lv_obj_add_event_cb(textarea, show_keyboard, LV_EVENT_FOCUSED, nullptr);
         lv_obj_add_event_cb(textarea, hide_keyboard, LV_EVENT_DEFOCUSED, nullptr);
         lv_obj_add_event_cb(textarea, hide_keyboard, LV_EVENT_READY, nullptr);
@@ -57,7 +57,7 @@ void keyboardAddTextArea(lv_obj_t* textarea) {
     // lv_obj_t auto-remove themselves from the group when they are destroyed (last checked in LVGL 8.3)
     lv_group_add_obj(gui->keyboardGroup, textarea);
 
-    lvgl::keypad_activate(gui->keyboardGroup);
+    lvgl::software_keyboard_activate(gui->keyboardGroup);
 
     lvgl::unlock();
     unlock();