V1 to v2 apps migration (Release_2) + Threat Intel

[JV0812]

Purpose of this pull request

This pull request is to update the app installation steps as per V2. Also, add updating and deleting the app information.

Select the type of change

• [ ] Minor Changes - Typos, formatting, slight revisions
• [x] Update Content - Revisions, updating sections
• [ ] New Content - New features, sections, pages, tutorials
• [ ] Site and Tools - .clabot, version updates, maintenance, dependencies, new packages for the site (Docusaurus, Gatsby, React, etc.)

Ticket (if applicable)

Doc changes for the migrated V2 apps which are using Threat Intel

[JV0812]

@kimsauce Thanks Kim for your review.

[jpipkin1]

@JV0812, the threat intel GA release date is currently targeted for January 16, 2025.

[jpipkin1]

@JV0812, this PR has some merge conflicts. Let me know when you've resolved them, and I'll give it a review.

[soc-service-agent]

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