After redesigning all Zed icons
(https://github.com/zed-industries/zed/pull/35856), it felt like using
1.5 for stroke width didn't really flow well with the default typeface
default font weight. Reducing it to 1.2 makes the UI much sharper, less
burry, and more cohesive overall.
Release Notes:
- N/A
Adds some of the UI components to allow us to visually render settings.
These are UI only and are not functional yet (@maxdeviant will be
working on these when he is back.)
You can see some examples by running `script/storybook setting`.

Release Notes:
- N/A