feat: publish the Sandwich Hime tutorial starter

LICENSES.md

@@ -0,0 +1,16 @@
+<!-- SPDX-License-Identifier: 0BSD -->
+
+# License map
+
+This starter is intentionally easy to copy.
+
+- Human-authored source, templates, tests, scripts, and documentation in this
+  repository are offered under the [Zero-Clause BSD license](LICENSE).
+- Adjacent `*.sando.go` files are generated application code. In this
+  repository they follow the same 0BSD choice as their source templates, under
+  Sandwich Hime's generated-output policy and output exception. Do not add or
+  repair headers by hand; regenerate them with Hime-san.
+- The separately obtained Hime-san compiler is AGPL-3.0-only.
+- The separately obtained `sando` runtime is Apache-2.0.
+
+The compiler and runtime are dependencies, not copied into this repository.