Add Changesets configuration and update development documentation (#1964)

Introduce Changesets for versioning and changelog generation, and
enhance development documentation to guide contributors on using
Changesets effectively.

.changeset/config.json

@@ -0,0 +1,11 @@
+{
+  "$schema": "https://unpkg.com/@changesets/config@3.0.5/schema.json",
+  "changelog": "./changelog.js",
+  "commit": false,
+  "fixed": [],
+  "linked": [],
+  "access": "restricted",
+  "baseBranch": "main",
+  "updateInternalDependencies": "patch",
+  "ignore": []
+}