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/collab/src/db/tests/embedding_tests.rs

@@ -8,7 +8,7 @@ use time::{Duration, OffsetDateTime, PrimitiveDateTime};
 // SQLite does not support array arguments, so we only test this against a real postgres instance
 #[gpui::test]
 async fn test_get_embeddings_postgres(cx: &mut gpui::TestAppContext) {
-    let test_db = TestDb::postgres(cx.executor().clone());
+    let test_db = TestDb::postgres(cx.executor());
     let db = test_db.db();
 
     let provider = "test_model";
@@ -38,7 +38,7 @@ async fn test_get_embeddings_postgres(cx: &mut gpui::TestAppContext) {
 
 #[gpui::test]
 async fn test_purge_old_embeddings(cx: &mut gpui::TestAppContext) {
-    let test_db = TestDb::postgres(cx.executor().clone());
+    let test_db = TestDb::postgres(cx.executor());
     let db = test_db.db();
 
     let model = "test_model";