🌱 Move controllers to internal - part3

[fabriziopandini]

What this PR does / why we need it:
This PR moves the last group of controllers from /controllers to internal/controllers

Which issue(s) this PR fixes:
Rif #5455

[sbueringer]

Great work! One nit, otherwise lgtm

[k8s-ci-robot]

@fabriziopandini: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
pull-cluster-api-apidiff-main	626ab4d	link	false	/test pull-cluster-api-apidiff-main

Full PR test history. Your PR dashboard. Please help us cut down on flakes by linking to an open issue when you hit one in your PR.

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[vincepri]

/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: vincepri

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[enxebre]

/lgtm