Add --tcpip feature

Expose an option to automatically configure and reconnect the device
over TCP/IP, to simplify wireless connection without using adb
explicitly.

There are two variants:
 - If a destination address is provided, then scrcpy connects to this
   address before starting. The device must listen on the given TCP port
   (default is 5555).
 - If no destination address is provided, then scrcpy attempts to find
   the IP address of the current device (typically connected over USB),
   enables TCP/IP mode, then connects to this address before starting.

PR #2827 <https://github.com/Genymobile/scrcpy/pull/2827>

app/src/options.c

@@ -54,4 +54,6 @@ const struct scrcpy_options scrcpy_options_default = {
     .legacy_paste = false,
     .power_off_on_close = false,
     .clipboard_autosync = true,
+    .tcpip = false,
+    .tcpip_dst = NULL,
 };