add a changelog file

CHANGELOG.md

@@ -0,0 +1,12 @@
+## CHANGELOG
+
+> NOTE: this changelog is only for changes to the sokol-odin 'scaffolding'.
+For actual Sokol header changes, see the
+[sokol changelog](https://github.com/floooh/sokol/blob/master/CHANGELOG.md).
+
+### 13-Apr-2024
+
+Merged PR https://github.com/floooh/sokol-odin/pull/11, this changes the
+directory structure of the bindings repository, adds support to build
+the Windows bindings as a DLL and a couple of smaller things
+detailed here: https://github.com/floooh/sokol/pull/1023