fix(bindings): update zig template files (#4637)

crates/cli/src/templates/test.zig

@@ -0,0 +1,17 @@
+const testing = @import("std").testing;
+
+const ts = @import("tree-sitter");
+const root = @import("tree-sitter-PARSER_NAME");
+const Language = ts.Language;
+const Parser = ts.Parser;
+
+test "can load grammar" {
+    const parser = Parser.create();
+    defer parser.destroy();
+
+    const lang: *const ts.Language = @ptrCast(root.language());
+    defer lang.destroy();
+
+    try testing.expectEqual(void{}, parser.setLanguage(lang));
+    try testing.expectEqual(lang, parser.getLanguage());
+}