WIP: Adds cilium into the UI and implement the initial installation. Exploratory...

What does this MR do?

Exploratory MR surrounding the task: #14010 (closed)

It is still in the very early version and there is some clean up before merging this PR.

It ties Cilium from the cluster page up to the helm API and cluster installation.

Screenshots

Conformity

• Changelog entry
• Documentation (if required)
• Code review guidelines
• Merge request performance guidelines
• Style guides
• Database guides
• Separation of EE specific content

Availability and Testing

• Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.
• Tested in all supported browsers

Security

If this MR contains changes to processing or storing of credentials or tokens, authorization and authentication methods and other items described in the security review guidelines:

• Label as security and @ mention @gitlab-com/gl-security/appsec
• The MR includes necessary changes to maintain consistency between UI, API, email, or other methods
• Security reports checked/validated by a reviewer from the AppSec team