Fix missing nodes in outline (#990)

* Remove some boilerplate from test

* Fix missing nodes in outline

src/analysis.zig

@@ -1851,6 +1851,7 @@ fn addOutlineNodes(allocator: std.mem.Allocator, tree: Ast, child: Ast.Node.Inde
         .error_set_decl,
         => return,
         .container_decl,
+        .container_decl_trailing,
         .container_decl_arg,
         .container_decl_arg_trailing,
         .container_decl_two,

tests/lsp_features/document_symbol.zig

@@ -32,6 +32,9 @@ test "documentSymbol - nested struct with self" {
         \\};
     ,
         \\Variable Foo
+        \\  Variable Self
+        \\  Function foo
+        \\  Variable Bar
     );
 }