feat(repo_map): add elixir support (#894)

crates/avante-repo-map/queries/tree-sitter-elixir-defs.scm

@@ -0,0 +1,21 @@
+; * modules and protocols
+(call
+  target: (identifier) @ignore
+  (arguments (alias) @class)
+  (#match? @ignore "^(defmodule|defprotocol)$"))
+
+; * functions
+(call
+  target: (identifier) @ignore
+  (arguments
+    [
+      ; zero-arity functions with no parentheses
+      (identifier) @method
+      ; regular function clause
+      (call target: (identifier) @method)
+      ; function clause with a guard clause
+      (binary_operator
+        left: (call target: (identifier) @method)
+        operator: "when")
+    ])
+  (#match? @ignore "^(def|defdelegate|defguard|defn)$"))