[ty] Add LSP debug information command (#20379)

Co-authored-by: Micha Reiser <micha@reiser.io>

crates/ty_python_semantic/src/lint.rs

@@ -463,7 +463,7 @@ impl From<&'static LintMetadata> for LintEntry {
     }
 }
 
-#[derive(Debug, Clone, Default, PartialEq, Eq, get_size2::GetSize)]
+#[derive(Clone, Default, PartialEq, Eq, get_size2::GetSize)]
 pub struct RuleSelection {
     /// Map with the severity for each enabled lint rule.
     ///
@@ -541,6 +541,35 @@ impl RuleSelection {
     }
 }
 
+// The default `LintId` debug implementation prints the entire lint metadata.
+// This is way too verbose.
+impl fmt::Debug for RuleSelection {
+    fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
+        let lints = self.lints.iter().sorted_by_key(|(lint, _)| lint.name);
+
+        if f.alternate() {
+            let mut f = f.debug_map();
+
+            for (lint, (severity, source)) in lints {
+                f.entry(
+                    &lint.name().as_str(),
+                    &format_args!("{severity:?} ({source:?})"),
+                );
+            }
+
+            f.finish()
+        } else {
+            let mut f = f.debug_set();
+
+            for (lint, _) in lints {
+                f.entry(&lint.name());
+            }
+
+            f.finish()
+        }
+    }
+}
+
 #[derive(Default, Copy, Clone, Debug, PartialEq, Eq, get_size2::GetSize)]
 pub enum LintSource {
     /// The user didn't enable the rule explicitly, instead it's enabled by default.