add floating window setting (#8279)

* Set `disable-floating-window` in client ui, it shows enabled when
  option is enabled and has floating window permission.
* Remove ignore battery setting because not work on every device.
* When the phone orientation changes, make the Y coordinate change
  proportionally, when changing back, the floating window position is still the original one.
* Add custom client option `floating-window-untouchable` to make the
  click event pass through the floating window automically. Set it untouchable automically when transparency is 0.
* On my phone, floating window size 16 no works and 32 works, so keep
  the size range [32, 320]

Signed-off-by: 21pages <sunboeasy@gmail.com>

src/lang/el.rs

@@ -615,5 +615,7 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("android_new_voice_call_tip", ""),
         ("texture_render_tip", ""),
         ("Use texture rendering", ""),
+        ("Floating window", ""),
+        ("floating_window_tip", ""),
     ].iter().cloned().collect();
 }