Touch support for PaneGrid and PickList (#650)

* touch events properly parsed and converted to logical size, button working

* scrolling with a nice touch

* fixed application state level touch cursor. panel_grid is touchable now.

* format glicthes fixes

* format glitches

* tight format

* fixed pane grid

* fixing with upstream

* Remove unused `touch` module from `iced_core`

* Remove unused `crate::text` import in `iced_native`

* Remove redundant match branch in `iced_winit`

* Keep removed line break in `UserInterface::update`

* Compute `text_size` only when bounds contains cursor in `overlay::menu`

Co-authored-by: Héctor Ramón Jiménez <hector0193@gmail.com>

wgpu/src/text.rs

@@ -19,6 +19,7 @@ impl Pipeline {
         let default_font = default_font.map(|slice| slice.to_vec());
 
         // TODO: Font customization
+        #[cfg(not(target_os = "ios"))]
         #[cfg(feature = "default_system_font")]
         let default_font = {
             default_font.or_else(|| {