fix: add changeset script to package.json

Author: jpoehnelt

.changeset/eight-jokes-tickle.md

@@ -0,0 +1,5 @@
+---
+"google-workspace-vscode-extension": patch
+---
+
+Change to monorepo structure.

CONTRIBUTING.md

@@ -22,6 +22,19 @@ use GitHub pull requests for this purpose. Consult
 [GitHub Help](https://help.github.com/articles/about-pull-requests/) for more
 information on using pull requests.
 
+## Changesets
+
+This project uses [Changesets](https://github.com/changesets/changesets) to manage releases.
+If you are making a change that should be included in the release notes, you must add a changeset.
+
+To add a changeset, run the following command:
+
+```sh
+pnpm changeset
+```
+
+You will be prompted to select the packages that have been changed, the type of change (major, minor, or patch), and to provide a description of the change.
+
 ## Community Guidelines
 
 This project follows [Google's Open Source Community

package.json

@@ -3,6 +3,7 @@
   "private": true,
   "scripts": {
     "build": "turbo build",
+    "changeset": "changeset",
     "check": "turbo check",
     "ci:package": "turbo run ci:package",
     "ci:release": "turbo run ci:release",