NFC: move worker to separate file, use LED for IO indication, field on/off menu (#231)

applications/nfc/nfc_i.h

@@ -0,0 +1,49 @@
+#pragma once
+
+#include <flipper_v2.h>
+
+#include <rfal_analogConfig.h>
+#include <rfal_rf.h>
+#include <rfal_nfc.h>
+#include <rfal_nfca.h>
+#include <st25r3916.h>
+#include <st25r3916_irq.h>
+
+#include <gui/gui.h>
+#include <gui/widget.h>
+#include <gui/canvas.h>
+#include <assets_icons.h>
+
+#include <menu/menu.h>
+#include <menu/menu_item.h>
+
+#include "dispatcher.h"
+
+typedef enum {
+    MessageTypeBase,
+} NfcMessageType;
+
+typedef struct {
+    Message base;
+    void* data;
+} NfcMessage;
+
+struct Nfc {
+    Dispatcher* dispatcher;
+    Icon* icon;
+    Widget* widget;
+    ValueMutex* menu_vm;
+    MenuItem* menu;
+    rfalNfcDiscoverParam* disParams;
+
+    osThreadAttr_t worker_attr;
+    osThreadId_t worker;
+
+    uint8_t screen;
+    uint8_t ret;
+    uint8_t devCnt;
+    rfalNfcaSensRes first_atqa;
+    rfalNfcaSelRes first_sak;
+
+    char* current;
+};