Enable and Refactor Single Group to Multi-Group API Support

[naimulh247]

Description

Enable Kubebuilder / Operator SDK multi-group support by restructuring API and controller directories into group-specific paths. This lays the groundwork for supporting multiple API groups beyond enterprise

Key Changes

• Enabled multigroup: true in the PROJECT file
• Moved API types from api/v{1,2,3,4}/ to api/enterprise/v{1,2,3,4}/
• Moved controllers from internal/controller/ to internal/controller/enterprise/
• Updated import paths across to reference the new api/enterprise/ and internal/controller/enterprise/ paths
• Updated PROJECT file resource entries with new api/enterprise paths
• Updated .biased_lang_exclude paths to reflect new directory structure

Testing and Verification

• make command passed without any errors
• waiting for pipeline to finish running

Related Issues

Jira tickets, GitHub issues, Support tickets...

PR Checklist

• Code changes adhere to the project's coding standards.
• Relevant unit and integration tests are included.
• Documentation has been updated accordingly.
• All tests pass locally.
• The PR description follows the project's guidelines.

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