[FL-1449] Indala reading and writing (#616)

* Rfid: indala 40134 validation and decoding
* Rfid: show indala info
* Rfid: decoder to output comparator signal on gpio pins
* Rfid: working indala 40134 decoder
* HAL: added function to change rfid timer parameters on the fly
* RFID: Indala reading, card detection, card verification
* Rfid: indala writing

applications/lfrfid/helpers/decoder-gpio-out.cpp

@@ -0,0 +1,15 @@
+#include "decoder-gpio-out.h"
+#include <furi.h>
+#include <api-hal.h>
+
+void DecoderGpioOut::process_front(bool polarity, uint32_t time) {
+    hal_gpio_write(&gpio_ext_pa7, polarity);
+}
+
+DecoderGpioOut::DecoderGpioOut() {
+    hal_gpio_init_simple(&gpio_ext_pa7, GpioModeOutputPushPull);
+}
+
+DecoderGpioOut::~DecoderGpioOut() {
+    hal_gpio_init_simple(&gpio_ext_pa7, GpioModeAnalog);
+}