Start on autoclosing pairs

Co-Authored-By: Nathan Sobo <nathan@zed.dev>

crates/buffer/src/language.rs

@@ -11,6 +11,13 @@ pub use tree_sitter::{Parser, Tree};
 pub struct LanguageConfig {
     pub name: String,
     pub path_suffixes: Vec<String>,
+    pub autoclose_pairs: Vec<AutoclosePair>,
+}
+
+#[derive(Clone, Deserialize)]
+pub struct AutoclosePair {
+    pub start: String,
+    pub end: String,
 }
 
 pub struct Language {
@@ -81,6 +88,10 @@ impl Language {
         self.config.name.as_str()
     }
 
+    pub fn autoclose_pairs(&self) -> &[AutoclosePair] {
+        &self.config.autoclose_pairs
+    }
+
     pub fn highlight_map(&self) -> HighlightMap {
         self.highlight_map.lock().clone()
     }