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/supermaven/src/supermaven.rs

@@ -384,9 +384,7 @@ impl SupermavenAgent {
         match message {
             SupermavenMessage::ActivationRequest(request) => {
                 self.account_status = match request.activate_url {
-                    Some(activate_url) => AccountStatus::NeedsActivation {
-                        activate_url: activate_url.clone(),
-                    },
+                    Some(activate_url) => AccountStatus::NeedsActivation { activate_url },
                     None => AccountStatus::Ready,
                 };
             }

crates/supermaven/src/supermaven_completion_provider.rs

@@ -45,9 +45,7 @@ fn completion_from_diff(
     position: Anchor,
     delete_range: Range<Anchor>,
 ) -> EditPrediction {
-    let buffer_text = snapshot
-        .text_for_range(delete_range.clone())
-        .collect::<String>();
+    let buffer_text = snapshot.text_for_range(delete_range).collect::<String>();
 
     let mut edits: Vec<(Range<language::Anchor>, String)> = Vec::new();