Fix clippy::redundant_clone lint violations (#36558)

This removes around 900 unnecessary clones, ranging from cloning a few
ints all the way to large data structures and images.

A lot of these were fixed using `cargo clippy --fix --workspace
--all-targets`, however it often breaks other lints and needs to be run
again. This was then followed up with some manual fixing.

I understand this is a large diff, but all the changes are pretty
trivial. Rust is doing some heavy lifting here for us. Once I get it up
to speed with main, I'd appreciate this getting merged rather sooner
than later.

Release Notes:

- N/A

crates/gpui/examples/input.rs

@@ -446,7 +446,7 @@ impl Element for TextElement {
         let (display_text, text_color) = if content.is_empty() {
             (input.placeholder.clone(), hsla(0., 0., 0., 0.2))
         } else {
-            (content.clone(), style.color)
+            (content, style.color)
         };
 
         let run = TextRun {
@@ -474,7 +474,7 @@ impl Element for TextElement {
                 },
                 TextRun {
                     len: display_text.len() - marked_range.end,
-                    ..run.clone()
+                    ..run
                 },
             ]
             .into_iter()

crates/gpui/examples/text.rs

@@ -155,7 +155,7 @@ impl RenderOnce for Specimen {
             .text_size(px(font_size * scale))
             .line_height(relative(line_height))
             .p(px(10.0))
-            .child(self.string.clone())
+            .child(self.string)
     }
 }