Add ast.Selector_Expr_Call

core/odin/ast/ast.odin

@@ -146,6 +146,7 @@ Paren_Expr :: struct {
 Selector_Expr :: struct {
 	using node: Expr,
 	expr:  ^Expr,
+	op:    tokenizer.Token,
 	field: ^Ident,
 }
 
@@ -154,6 +155,13 @@ Implicit_Selector_Expr :: struct {
 	field: ^Ident,
 }
 
+Selector_Call_Expr :: struct {
+	using node: Expr,
+	expr: ^Expr,
+	call: ^Call_Expr,
+	modified_call: bool,
+}
+
 Index_Expr :: struct {
 	using node: Expr,
 	expr:  ^Expr,