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.

lib/nfc/protocols/iso14443_3a/iso14443_3a_poller.h

@@ -0,0 +1,42 @@
+#pragma once
+
+#include "iso14443_3a.h"
+#include <lib/nfc/nfc.h>
+
+#include <nfc/nfc_poller.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct Iso14443_3aPoller Iso14443_3aPoller;
+
+typedef enum {
+    Iso14443_3aPollerEventTypeError,
+    Iso14443_3aPollerEventTypeReady,
+} Iso14443_3aPollerEventType;
+
+typedef struct {
+    Iso14443_3aError error;
+} Iso14443_3aPollerEventData;
+
+typedef struct {
+    Iso14443_3aPollerEventType type;
+    Iso14443_3aPollerEventData* data;
+} Iso14443_3aPollerEvent;
+
+Iso14443_3aError iso14443_3a_poller_txrx(
+    Iso14443_3aPoller* instance,
+    const BitBuffer* tx_buffer,
+    BitBuffer* rx_buffer,
+    uint32_t fwt);
+
+Iso14443_3aError iso14443_3a_poller_send_standard_frame(
+    Iso14443_3aPoller* instance,
+    const BitBuffer* tx_buffer,
+    BitBuffer* rx_buffer,
+    uint32_t fwt);
+
+#ifdef __cplusplus
+}
+#endif