[FL-1419] new iButton cli (#521)

* iButton, helpers: add destructor
* iButton app: new approach to cli commands, cli read
* iButton app: cli write
* iButton app: cli emulate
* iButton app: remove old cli commands
* iButton app: use unique_ptr for worker
* iButton app: remove obsolete cli help
* iButton app: fix help and key type parsing

applications/ibutton/helpers/key-emulator.cpp

@@ -2,7 +2,7 @@
 #include <callback-connector.h>
 
 KeyEmulator::~KeyEmulator() {
-    onewire_slave->stop();
+    stop();
 }
 
 KeyEmulator::KeyEmulator(OneWireSlave* _onewire_slave)

applications/ibutton/helpers/key-worker.cpp

@@ -49,3 +49,6 @@ KeyWorker::KeyWorker(const GpioPin* one_wire_gpio)
     , key_emulator{&onewire_slave}
     , key_writer{&onewire_master} {
 }
+
+KeyWorker::~KeyWorker() {
+}

applications/ibutton/helpers/key-worker.h

@@ -23,6 +23,7 @@ public:
     void stop_write();
 
     KeyWorker(const GpioPin* one_wire_gpio);
+    ~KeyWorker();
 
 private:
     // one wire

applications/ibutton/helpers/key-writer.cpp

@@ -5,6 +5,10 @@ KeyWriter::KeyWriter(OneWireMaster* _onewire_master) {
     onewire_master = _onewire_master;
 }
 
+KeyWriter::~KeyWriter() {
+    stop();
+}
+
 KeyWriter::Error KeyWriter::write(iButtonKey* key) {
     return write_internal(key);
 }