Add blank changelog for release-it.

Codex- · Codex- · commit ef1702380c32 · 2022-04-12T11:23:54.000+12:00
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -0,0 +1,5 @@
+### Changelog
+
+All notable changes to this project will be documented in this file. Dates are displayed in UTC.
+
+Generated by [`auto-changelog`](https://github.com/CookPete/auto-changelog).
