settings ui: Add basic setting page fields to UI (#39343)

This PR starts the process of adding each setting field manually to
their respective page in the UI and organizes user/project fields as
well. The next major step is implementing a numeric stepper component,
and handling discriminate union enums as well.

I also did some minor polish in this PR as well
- Switches now use accent color
- Fixed text input rendering with zero width 
- Made setting pages scrollable 
- Set drop down context menu style to outline

Release Notes:

- N/A

---------

Co-authored-by: dino <dinojoaocosta@gmail.com>

crates/settings_ui/src/components.rs

@@ -49,6 +49,8 @@ impl RenderOnce for SettingsEditor {
                 if let Some(placeholder) = self.placeholder {
                     editor.set_placeholder_text(placeholder, window, cx);
                 }
+                // todo(settings_ui): We should have an observe global use for settings store
+                // so whenever a settings file is updated, the settings ui updates too
                 editor
             }
         });