Configure Keystatic for release images (#10889)

- Add validation for the `release` field of the releases collection
  - The `release` must follow semver format
- The `slug` matches the `release` by default and must follow semver
format, too
- Order the releases properly
- `0.10.0` appears before `0.3.0`; I made the comparison against
`0000.0010.0000` and `0000.0003.0000`
- Set up images for release's contents
- Refactor the release notes of the version `0.43.0` to be editable in
Keystatic; it will serve as an example

## Demo



https://github.com/user-attachments/assets/d82851e9-11e7-4e27-b645-cf86a93d77bf

packages/twenty-website/src/content/releases/0.43.0.mdx

@@ -7,10 +7,10 @@ Date: March 4th 2025
 
 The search feature now includes ranking scores. This helps you find the most relevant results faster.
 
-![](/images/releases/0.43/0.43-search-upgrade.png)
+![](/images/releases/0.43.0/search-upgrade.png)
 
 # Internal Email Privacy
 
 Internal team emails won't sync, protecting privacy by preventing access to internal discussions.
 
-![](/images/releases/0.43/0.43-email-privacy.png)
+![](/images/releases/0.43.0/email-privacy.png)