Mainline GPUI2 UI work (#3079)

This PR mainlines the current state of new GPUI2-based UI from the
`gpui2-ui` branch.

Release Notes:

- N/A

---------

Co-authored-by: Nate Butler <iamnbutler@gmail.com>
Co-authored-by: Piotr Osiewicz <24362066+osiewicz@users.noreply.github.com>
Co-authored-by: Nate <nate@zed.dev>

crates/ui/src/elements/icon.rs

@@ -84,6 +84,7 @@ pub enum Icon {
     Plus,
     Quote,
     Screen,
+    SelectAll,
     Split,
     SplitMessage,
     Terminal,
@@ -131,6 +132,7 @@ impl Icon {
             Icon::Plus => "icons/plus.svg",
             Icon::Quote => "icons/quote.svg",
             Icon::Screen => "icons/desktop.svg",
+            Icon::SelectAll => "icons/select-all.svg",
             Icon::Split => "icons/split.svg",
             Icon::SplitMessage => "icons/split_message.svg",
             Icon::Terminal => "icons/terminal.svg",

crates/ui/src/elements/input.rs

@@ -81,6 +81,7 @@ impl Input {
 
         div()
             .h_7()
+            .w_full()
             .px_2()
             .border()
             .border_color(border_color_default)

crates/ui/src/elements/player.rs

@@ -65,7 +65,7 @@ impl PlayerCallStatus {
     }
 }
 
-#[derive(Clone)]
+#[derive(PartialEq, Clone)]
 pub struct Player {
     index: usize,
     avatar_src: String,
@@ -73,6 +73,7 @@ pub struct Player {
     status: PlayerStatus,
 }
 
+#[derive(Clone)]
 pub struct PlayerWithCallStatus {
     player: Player,
     call_status: PlayerCallStatus,