feat: Add validation webhook possibility

[buehler]

Like "kubebuilder", the operator should be able to support webhooks to validate the crds when uploaded to kubernetes

[github-actions]

🎉 This issue has been resolved in version 3.0.0-prerelease.1 🎉

The release is available on:

• GitHub release
• v3.0.0-prerelease.1
• v3.0.0-prerelease.1

Your semantic-release bot 📦🚀

[github-actions]

🎉 This issue has been resolved in version 3.0.0 🎉

The release is available on:

• GitHub release
• v3.0.0
• v3.0.0

Your semantic-release bot 📦🚀