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
This is an update to 82 Zed UI and file_icons to improve icon legibility
and align contributed file_icons to the general icon system styling.
From review it appears they're 2px larger in width and height but gpui
render scaling is at play. The original icons were designed at 14x14 to
be viewed at that size, but the ui_font_size now controls this so
they've been updated to the default of 16x16 for optimum fidelity.

Release Notes:
- Updated various UI and file icons for consistency.