[FL-84] iButton app, dallas emulate + cyfral read, cyfral emulate (#253)

* maxim crc function
* one wire template device and ds1990 classes
* 3 fields for addr
* cyfral emulator lib
* add cyfral read mode, refract rendering and events
* add ADC1_IN14, add adc interrupt
* cyfral read mode
* rename and move api-hal includes folder
* build onewire libs only if we build app
* start in mode 0

firmware/targets/api-hal-include/api-hal-vcp.h

@@ -0,0 +1,24 @@
+#pragma once
+
+#include <stdbool.h>
+#include <stdint.h>
+#include <string.h>
+
+/* Init VCP HAL
+ * Allocates ring buffer and initializes state
+ */
+void api_hal_vcp_init();
+
+/* Recieve data from VCP
+ * Waits till some data arrives, never returns 0
+ * @param buffer - pointer to buffer
+ * @param size - buffer size
+ * @return items copied in buffer, 0 if channel closed
+ */
+size_t api_hal_vcp_rx(uint8_t* buffer, size_t size);
+
+/* Transmit data to VCP
+ * @param buffer - pointer to buffer
+ * @param size - buffer size
+ */
+void api_hal_vcp_tx(uint8_t* buffer, size_t size);