NFC refactoring (#3050)

"A long time ago in a galaxy far, far away...." we started NFC subsystem refactoring.

Starring:

- @gornekich - NFC refactoring project lead, architect, senior developer
- @gsurkov - architect, senior developer
- @RebornedBrain - senior developer

Supporting roles:

- @skotopes, @DrZlo13, @hedger - general architecture advisors, code review
- @Astrrra, @doomwastaken, @Hellitron, @ImagineVagon333 - quality assurance

Special thanks:

@bettse, @pcunning, @nxv, @noproto, @AloneLiberty and everyone else who has been helping us all this time and contributing valuable knowledges, ideas and source code.

applications/main/nfc/scenes/nfc_scene_field.c

@@ -1,10 +1,10 @@
-#include "../nfc_i.h"
+#include "../nfc_app_i.h"
 
 void nfc_scene_field_on_enter(void* context) {
-    Nfc* nfc = context;
-
-    furi_hal_nfc_field_on();
+    NfcApp* nfc = context;
 
+    furi_hal_nfc_low_power_mode_stop();
+    furi_hal_nfc_poller_field_on();
     Popup* popup = nfc->popup;
     popup_set_header(
         popup,
@@ -25,9 +25,9 @@ bool nfc_scene_field_on_event(void* context, SceneManagerEvent event) {
 }
 
 void nfc_scene_field_on_exit(void* context) {
-    Nfc* nfc = context;
+    NfcApp* nfc = context;
 
-    furi_hal_nfc_field_off();
+    furi_hal_nfc_low_power_mode_start();
     notification_internal_message(nfc->notifications, &sequence_reset_blue);
     popup_reset(nfc->popup);
 }