Chore: Restructre Sidebar and Top Level Items

[PragalvaXFREZ]

Notes for Reviewers

This PR fixes #

Signed commits

• Yes, I signed my commits.

[PragalvaXFREZ]

@CodexRaunak please have a look, and let's get started as per our huddle.

[github-actions]

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[gemini-code-assist]

Code Review

This pull request consolidates the Layer5 Cloud documentation by migrating content from the deleted overview file into the main index and expanding on the platform's features. The feedback suggests improving the documentation by merging redundant descriptions for better readability and restoring the 'Next Steps' section that was omitted during the migration.

[CodexRaunak]

consolidated to these top-level sections:

• academy
• concepts
• getting-started
• guides & tutorials
• reference

  - cloud/about -> cloud/getting-started/meet-five
  - cloud/catalog -> cloud/concepts/catalog
  - cloud/spaces -> cloud/concepts/spaces
  - cloud/identity + cloud/security -> cloud/concepts/identity-and-access
  - cloud/self-hosted -> cloud/guides/self-hosted
  - cloud/github-actions -> cloud/guides/integrations/github-actions
  - cloud/tutorials -> cloud/guides/tutorials
  - cloud/spaces/managing-workspaces -> cloud/guides/workspaces/managing-workspaces
  - cloud/identity/organizations/org-management -> cloud/guides/organizations/org-management

Also:

• Renamed About Page to Meet Five.
• Preserved old URLs with Hugo aliases.
• Updated internal docs links to canonical paths.

[PragalvaXFREZ]

@CodexRaunak , pushed two new changes, one renaming the identity and access as identity and security.
Another adding a white background over-ride for the meet-five page's cards.