[FL-2393][FL-2381] iButton, OneWire: move to plain C (#1068)

* iButton: getting started on the worker concept
* Hal delay: added global instructions_per_us variable
* iButton: one wire slave
* iButton: ibutton key setter
* iButton: one wire host, use ibutton_hal
* iButton\RFID: common pulse decoder concept
* iButton: cyfral decoder
* iButton: worker thread concept
* iButton: metakom decoder
* iButton: write key through worker
* iButton: worker mode holder
* iButton: worker improvements
* iButton: Cyfral encoder
* iButton: Metakom encoder
* lib: pulse protocol helpers
* iButton: Metakom decoder
* iButton: Cyfral decoder
* iButton worker: separate modes
* iButton: libs documentation
* HAL: iButton gpio modes
* iButton worker: rename modes file
* iButton worker, hal: move to LL
* iButton CLI: worker for reading and emulation commands
* iButton HAL: correct init and emulation sequence
* iButton cli: moved to plain C
* iButton: move to worker, small step to plain C
* Libs, one wire: move to plain C
* Libs: added forgotten files to compilation
* iButton writer: get rid of manual disable/enable irq

lib/one_wire/one_wire_slave.h

@@ -0,0 +1,71 @@
+/**
+ * @file one_wire_slave.h
+ * 
+ * 1-Wire slave library. Currently it can only emulate ID.
+ */
+
+#pragma once
+#include <stdint.h>
+#include <stdbool.h>
+#include <furi_hal_gpio.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct OneWireDevice OneWireDevice;
+typedef struct OneWireSlave OneWireSlave;
+typedef void (*OneWireSlaveResultCallback)(void* context);
+
+/**
+ * Allocate onewire slave
+ * @param pin 
+ * @return OneWireSlave* 
+ */
+OneWireSlave* onewire_slave_alloc();
+
+/**
+ * Free onewire slave
+ * @param bus 
+ */
+void onewire_slave_free(OneWireSlave* bus);
+
+/**
+ * Start working with the bus
+ * @param bus 
+ */
+void onewire_slave_start(OneWireSlave* bus);
+
+/**
+ * Stop working with the bus
+ * @param bus 
+ */
+void onewire_slave_stop(OneWireSlave* bus);
+
+/**
+ * Attach device for emulation
+ * @param bus 
+ * @param device 
+ */
+void onewire_slave_attach(OneWireSlave* bus, OneWireDevice* device);
+
+/**
+ * Detach device from bus
+ * @param bus 
+ */
+void onewire_slave_detach(OneWireSlave* bus);
+
+/**
+ * Set a callback to report emulation success
+ * @param bus 
+ * @param result_cb 
+ * @param context 
+ */
+void onewire_slave_set_result_callback(
+    OneWireSlave* bus,
+    OneWireSlaveResultCallback result_cb,
+    void* context);
+
+#ifdef __cplusplus
+}
+#endif