chore: Add nexus repo manager 3 openapi spec to catalog

[Zaperex]

Description

Added the Nexus Repository Manager 3 OpenAPI spec to the catalog entities

Which issue(s) does this PR fix

• Fixes Add the Nexus Repository Manager 3 OpenAPI spec to the catalog #423 ?

PR acceptance criteria

Please make sure that the following steps are complete:

• GitHub Actions are completed and successful
• Unit Tests are updated and passing
• E2E Tests are updated and passing
• Documentation is updated if necessary
• Add a screenshot if the change is UX/UI related

How to test changes / Special notes to the reviewer

[changeset-bot]

⚠️ No Changeset found

Latest commit: 8e04700

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[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
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No Coverage information
0.0% Duplication

[schultzp2020]

LGTM