Address Issues from Github

- Updated naming of config
- Define struct in ra_ide and use remote derive in rust-analyzer/config
- Make inlayConfig type more flexible to support more future types
- Remove constructor only used in tests

crates/rust-analyzer/src/main_loop/handlers.rs

@@ -997,7 +997,7 @@ pub fn handle_inlay_hints(
     let analysis = world.analysis();
     let line_index = analysis.file_line_index(file_id)?;
     Ok(analysis
-        .inlay_hints(file_id, world.options.max_inlay_hint_length)?
+        .inlay_hints(file_id, &world.options.inlay_hint_opts)?
         .into_iter()
         .map(|api_type| InlayHint {
             label: api_type.label.to_string(),