chore: update github templates

Author: lachlancollins

.github/ISSUE_TEMPLATE/config.yml

@@ -1,4 +1,4 @@
-blank_issues_enabled: true
+blank_issues_enabled: false
 contact_links:
   - name: Feature Requests & Questions
     url: https://github.com/TanStack/config/discussions

.github/pull_request_template.md

@@ -0,0 +1,9 @@
+## 🎯 Changes
+
+<!-- What changes are made in this PR? Is it a feature or a package submission? -->
+
+## ✅ Checklist
+
+- [ ] I have followed the steps listed in the [Contributing guide](https://github.com/TanStack/config/blob/main/CONTRIBUTING.md).
+- [ ] I have tested and linted this code locally.
+- [ ] I have generated a [changeset](https://github.com/changesets/changesets/blob/main/docs/adding-a-changeset.md) for this PR, or this PR should not release a new version.