🌱 consolidate Release types with operator-registry (#2771)

* Consolidate Release types with operator-registry

Signed-off-by: Rashmi Gottipati <rgottipa@redhat.com>

* address review comments

Signed-off-by: Rashmi Gottipati <rgottipa@redhat.com>

* address review comments

- Export parseExplicitRelease as ParseExplicitRelease and use it from
  parseInstalledBundleVersionRelease to deduplicate logic
- Replace manual loop with slicesutil.Map in asLegacyRegistryV1Version
- Update test error message expectation

Signed-off-by: Rashmi Gottipati <rgottipa@redhat.com>

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Signed-off-by: Rashmi Gottipati <rgottipa@redhat.com>

Author: rashmigottipati