assistant2: Wire up context picker with inline assist (#22106)

This PR wire up the context picker with the inline assist.

UI is not finalized.

Release Notes:

- N/A

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Co-authored-by: Richard <richard@zed.dev>
Co-authored-by: Agus <agus@zed.dev>

crates/assistant2/src/assistant.rs

@@ -3,6 +3,7 @@ mod assistant_panel;
 mod assistant_settings;
 mod context;
 mod context_picker;
+mod context_store;
 mod context_strip;
 mod inline_assistant;
 mod message_editor;