zeta: Send up diagnostics with prediction requests (#24384)

This PR makes it so we send up the diagnostic groups as additional data
with the edit prediction request.

We're not yet making use of them, but we are recording them so we can
use them later (e.g., to train the model).

Release Notes:

- N/A

---------

Co-authored-by: Nathan <nathan@zed.dev>

crates/supermaven/Cargo.toml

@@ -22,6 +22,7 @@ inline_completion.workspace = true
 language.workspace = true
 log.workspace = true
 postage.workspace = true
+project.workspace = true
 serde.workspace = true
 serde_json.workspace = true
 settings.workspace = true

crates/supermaven/src/supermaven_completion_provider.rs

@@ -4,6 +4,7 @@ use futures::StreamExt as _;
 use gpui::{App, Context, Entity, EntityId, Task};
 use inline_completion::{Direction, InlineCompletion, InlineCompletionProvider};
 use language::{Anchor, Buffer, BufferSnapshot};
+use project::Project;
 use std::{
     ops::{AddAssign, Range},
     path::Path,
@@ -123,6 +124,7 @@ impl InlineCompletionProvider for SupermavenCompletionProvider {
 
     fn refresh(
         &mut self,
+        _project: Option<Entity<Project>>,
         buffer_handle: Entity<Buffer>,
         cursor_position: Anchor,
         debounce: bool,