docs: add changelog updates

[tobySolutions]

Why?

This pull request was opened to add updates for changelog and the docs for the latest product updates.

How?

• Add changelog

Tickets?

• Create changelog post for platform features
• Update CTA text on fleek.xyz/agents to 'Create an agent'

Contribution checklist?

• The commit messages are detailed
• The build command runs locally
• Assets or static content are linked and stored in the project
• Document filename is named after the slug
• You've reviewed spelling using a grammar checker
• For documentation, guides or references, you've tested the commands and steps
• You've done enough research before writing

Security checklist?

• Sensitive data has been identified and is being protected properly
• Injection has been prevented (parameterized queries, no eval or system calls)
• The Components are escaping output (to prevent XSS)

[changeset-bot]

⚠️ No Changeset found

Latest commit: fd1b149

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

Click here to learn what changesets are, and how to add one.

Click here if you're a maintainer who wants to add a changeset to this PR