Consider emulators as TCP/IP devices

Emulators were wrongly considered as USB devices, so they were selected
using -d instead of -e (which was inconsistent with the adb behavior).

Refs #3005 <https://github.com/Genymobile/scrcpy/issues/3005>
Refs #3137 <https://github.com/Genymobile/scrcpy/issues/3137>

app/src/adb/adb_device.h

@@ -15,6 +15,12 @@ struct sc_adb_device {
     bool selected;
 };
 
+enum sc_adb_device_type {
+    SC_ADB_DEVICE_TYPE_USB,
+    SC_ADB_DEVICE_TYPE_TCPIP,
+    SC_ADB_DEVICE_TYPE_EMULATOR,
+};
+
 struct sc_vec_adb_devices SC_VECTOR(struct sc_adb_device);
 
 void
@@ -35,4 +41,10 @@ sc_adb_device_move(struct sc_adb_device *dst, struct sc_adb_device *src);
 void
 sc_adb_devices_destroy(struct sc_vec_adb_devices *devices);
 
+/**
+ * Deduce the device type from the serial
+ */
+enum sc_adb_device_type
+sc_adb_device_get_type(const char *serial);
+
 #endif