feat: updated settings - new form wrapper

[benfurber]

PR Checklist

• [x] - Commit messages are descriptive, it will be used in our Release Notes

PR Type

• [x] New feature (non-breaking change which adds functionality)

Description

First part of #3724. This creates a new wrapper for settings forms.

Video

https://github.com/ONEARMY/community-platform/assets/16688508/a81e63fe-0cb7-43ec-a91a-1bddf68df39b