project search: Persist search history across session (#9932)

Partially implements #9717, persistence between restarts is currently
missing, but I would like to get feedback on the implementation first.

Previously the search history was not saved across different project
searches. As the `SearchHistory` is now maintained inside of the
project, it can be persisted across different project searches.

I also removed the behavior that a new query replaces the previous
search query, if it contains the text of the previous query.
I believe this was only intended to make buffer search work, therefore I
disabled this behavior but only for the project search.

Currently when you navigated through the queries the tab title changed
even if the search was not started, which doesn't make sense to me.
Current behavior:


https://github.com/zed-industries/zed/assets/53836821/1c365702-e93c-4cab-a1eb-0af3fef95476


With this PR the tab header will actually keep the search name until you
start another search again.

---

Showcase:


https://github.com/zed-industries/zed/assets/53836821/c0d6e496-915f-44bc-be16-12d7c3cda2d7


Release Notes:

- Added support for persisting project search history across a session
- Fixed tab header of project search changing when cycling through
search history, even when there is no search submitted

crates/search/src/search.rs

@@ -8,7 +8,6 @@ use ui::{prelude::*, Tooltip};
 use ui::{ButtonStyle, IconButton};
 
 pub mod buffer_search;
-mod history;
 mod mode;
 pub mod project_search;
 pub(crate) mod search_bar;