Add changelog documentation for `v1.1.0`

[dotNomad]

Adds CHANGELOG details for beta 2.

Marking as draft since this will need to be updated as more is added to beta 2. We may also need to change the version number to match the version we tag.

Intent

Part of the Beta 2 documentation issue: #1734

Type of Change

• • [ ] Bug Fix
• • [ ] New Feature
• • [ ] Breaking Change
• • [x] Documentation
• • [ ] Refactor
• • [ ] Tooling