chore: 初回リリース用のchangesetを追加

Author: r74tech

.changeset/witty-lands-prove.md

@@ -0,0 +1,8 @@
+---
+"@wdpr/parser": major
+"@wdpr/render": major
+"@wdpr/ast": major
+"@wdpr/runtime": major
+---
+
+Initial release of WDPR packages: parser, renderer, AST definitions, and runtime