Signed-off-by: Andrei Kvapil <kvapss@gmail.com>
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## What this PR does
### Release note
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```release-note
[cozystack-operator] Introduce Cozystack-operator core logic
```
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-->
## Summary by CodeRabbit
* **New Features**
* Operator entrypoint with flag-driven configuration (metrics, probes,
leader election, Flux pre-install, version, platform-source options).
* Optional pre-start Flux installation and automatic provisioning of
platform sources from OCI or Git/HTTP(S)/SSH.
* **Chores**
* Embedded Flux manifests packaged for simplified installation; build
tooling updated to produce new manifest outputs.
* **Behavior**
* Pre-start Flux and platform-source installation failures are treated
as fatal.
<sub>✏️ Tip: You can customize this high-level summary in your review
settings.</sub>
<!-- end of auto-generated comment: release notes by coderabbit.ai -->