Add textobjects queries (#20924)

Co-Authored-By: Max <max@zed.dev>

Release Notes:

- vim: Added motions `[[`, `[]`, `]]`, `][` for navigating by section,
`[m`, `]m`, `[M`, `]M` for navigating by method, and `[*`, `]*`, `[/`,
`]/` for comments. These currently only work for languages built in to
Zed, as they are powered by new tree-sitter queries.
- vim: Added new text objects: `ic`, `ac` for inside/around classes,
`if`,`af` for functions/methods, and `g c` for comments. These currently
only work for languages built in to Zed, as they are powered by new
tree-sitter queries.

---------

Co-authored-by: Max <max@zed.dev>

crates/language/src/language_registry.rs

@@ -181,6 +181,7 @@ pub const QUERY_FILENAME_PREFIXES: &[(
     ("overrides", |q| &mut q.overrides),
     ("redactions", |q| &mut q.redactions),
     ("runnables", |q| &mut q.runnables),
+    ("textobjects", |q| &mut q.text_objects),
 ];
 
 /// Tree-sitter language queries for a given language.
@@ -195,6 +196,7 @@ pub struct LanguageQueries {
     pub overrides: Option<Cow<'static, str>>,
     pub redactions: Option<Cow<'static, str>>,
     pub runnables: Option<Cow<'static, str>>,
+    pub text_objects: Option<Cow<'static, str>>,
 }
 
 #[derive(Clone, Default)]