Move data/ to app/

The files in data/ are specific to the client app (not the server).

This also avoids to reference the parent directory (../) from
app/meson.build.

Refs 8d583d36e2

app/data/scrcpy-noconsole.vbs

@@ -0,0 +1,7 @@
+strCommand = "cmd /c scrcpy.exe"
+
+For Each Arg In WScript.Arguments
+    strCommand = strCommand & " """ & replace(Arg, """", """""""""") & """"
+Next
+
+CreateObject("Wscript.Shell").Run strCommand, 0, false