feat: Add an initial changelog config (#5145)

### Description
Craft will support generating changelogs from PR labels in
getsentry/craft#628. Add an initial config for
our repo.

#### Issues
<!--
* resolves: #1234
* resolves: LIN-1234
-->

#### Reminders
- Please add tests to validate your changes, and lint your code using
`tox -e linters`.
- Add GH Issue ID _&_ Linear ID (if applicable)
- PR title should use [conventional
commit](https://develop.sentry.dev/engineering-practices/commit-messages/#type)
style (`feat:`, `fix:`, `ref:`, `meta:`)
- For external contributors:
[CONTRIBUTING.md](https://github.com/getsentry/sentry-python/blob/master/CONTRIBUTING.md),
[Sentry SDK development docs](https://develop.sentry.dev/sdk/), [Discord
community](https://discord.gg/Ww9hbqr)

Author: sentrivana

.github/release.yml

@@ -0,0 +1,26 @@
+changelog:
+  exclude:
+    labels:
+      - skip-changelog
+    authors:
+      - dependabot
+  categories:
+    - title: New Features ✨
+      labels:
+        - "Changelog: Feature"
+        - Feature
+        - Improvement
+        - New Integration
+    - title: Bug Fixes 🐛
+      labels:
+        - "Changelog: Bugfix"
+        - Bug
+    - title: Documentation 📚
+      labels:
+        - "Changelog: Docs"
+        - Docs
+        - "Component: Docs"
+    - title: Internal Changes 🔧
+      labels:
+        - "Changelog: Internal"
+        - Quality Improvement