eval: Fine-grained assertions (#29246)

- Support programmatic examples
([example](17feb260a0/crates/eval/src/examples/file_search.rs))
- Combine data-driven example declarations into a single `.toml` file
([example](17feb260a0/crates/eval/src/examples/find_and_replace_diff_card.toml))
- Run judge on individual assertions (previously called "criteria")
- Report judge and programmatic assertions in one combined table

Note: We still need to work on concept naming 

<img width=400
src="https://github.com/user-attachments/assets/fc719c93-467f-412b-8d47-68821bd8a5f5">

Release Notes:

- N/A

---------

Co-authored-by: Richard Feldman <oss@rtfeldman.com>
Co-authored-by: Max Brunsfeld <maxbrunsfeld@gmail.com>
Co-authored-by: Thomas Mickley-Doyle <tmickleydoyle@gmail.com>

crates/assistant_tools/src/assistant_tools.rs

@@ -56,6 +56,8 @@ use crate::symbol_info_tool::SymbolInfoTool;
 use crate::terminal_tool::TerminalTool;
 use crate::thinking_tool::ThinkingTool;
 
+pub use path_search_tool::PathSearchToolInput;
+
 pub fn init(http_client: Arc<HttpClientWithUrl>, cx: &mut App) {
     assistant_tool::init(cx);