Add section about emissions dashboard to regions pages

[Kemi-Elizabeth]

Where on docs.platform.sh should be changed?

We need to have a new section in our documentation to inform users of the 2024 emissions dashboard

The Dashboard is accessible via the Billing section and a new tab called Emissions

Example: https://clo-45-add-project-to-nt2pd4y-i7dymnob47qsi.us-2.platformsh.site/cam-staging/-/billing/carbon-emissions

Emissions are for 2024, and we show an Org Total number for 2024 as well as a Table for Project Totals for 2024 ( Users can then see which projects contributed most to the total )

Data does not include OVH or Orange projects

What exactly should be updated?

• https://docs.upsun.com/development/regions.html#environmental-impact
• https://docs.platform.sh/development/regions.html#environmental-impact

Additional context

No response