chore: add docs for custom components

[bnchrch]

What

• Adds documentation for a new custom component feature.
• Feature is available only to OSS and enterprise users.
• Documentation includes:
  • Optional to run information.
  • Unsafe feature warnings.
  • Instructions on how to enable the feature.

How

• Updated the existing documentation to incorporate the new feature.
• Clearly outlined optional and unsafe aspects.
• Provided step-by-step instructions for enabling the feature.

Additional Context

• This documentation aims to clarify the use of the custom component.
• It ensures users are aware of the potential risks.

Notes for Reviewer

• Please check for clarity in the documentation.
• Ensure that all steps for enabling the feature are accurately described.
• Verify that warnings regarding safety are prominent and easy to understand.

Recommended Reading Order

• Documentation Overview
• New Custom Component Feature
• Optional and Unsafe Features
• Enabling Instructions

Can This PR Be Reverted and Rolled Back

• Yes, this PR can be easily reverted if needed, as it only involves documentation updates.

Related to https://github.com/airbytehq/airbyte-platform-internal/pull/15491

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Name	Status	Preview	Comments	Updated (UTC)
airbyte-docs	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Mar 14, 2025 9:56pm

[natikgadzhi]

This is awesome — nice way to wrap things up