refactor: more moves

diff --git a/CHANGELOG.md b/packages/pinia/CHANGELOG.md
similarity index 100%
rename from CHANGELOG.md
rename to packages/pinia/CHANGELOG.md

diff --git a/vite.config.ts b/packages/pinia/vite.config.ts
similarity index 100%
rename from vite.config.ts
rename to packages/pinia/vite.config.ts