(doc) Add upcoming release notes for CCM 0.12.1

[AdmiringWorm]

Description Of Changes

This adds the release notes for an upcoming release of Chocolatey Central Management v0.12.1.

Motivation and Context

To document the changes coming in a new version of the project.

Testing

• [x] I have previewed these changes using the Docker Container or another method before submitting this pull request.

Change Types Made

• [ ] Minor documentation fix (typos etc.).
• [x] Major documentation change (refactoring, reformatting or adding documentation to existing page).
• [ ] New documentation page added.
• [ ] The change I have made should have a video added, and I have raised an issue for this.

Change Checklist

• [ ] Requires a change to menu structure (top or left-hand side)/
• [ ] Menu structure has been updated

Related Issue

N/A