add(platform): carbon footprint doc (#17)

.vscode/aiven.code-snippets

@@ -16,9 +16,8 @@
     "scope": "markdown",
     "prefix": "Required access",
     "body": [
-      ":::info",
+      "## Required access",
       "You must be a ${1|[super admin](/docs/platform/howto/make-super-admin),[project admin](/docs/platform/reference/project-member-privileges),[project operator](/docs/platform/reference/project-member-privileges)|} to access this feature.",
-      ":::"
     ],
     "description": "Inserts a section with information on what role is needed to access a feature"
   },

docs/platform/concepts/carbon-footprint.md

@@ -0,0 +1,19 @@
+---
+title: Carbon footprint
+early: true
+---
+
+You must be a [super admin](/docs/platform/howto/make-super-admin) to access this feature.
+
+The carbon footprint page shows estimates of the greenhouse gas emissions associated with service usage per project in your organization.
+
+Emissions are measured in metric tons of carbon dioxide-equivalent, which includes
+multiple greenhouse gasses. The following information is shown on the dashboard for the
+selected project:
+
+- Estimated emissions for the month: Shows a running estimate of emissions for the
+  current calendar month.
+- Monthly carbon emissions: Shows an estimate of the emissions for the last 3, 6, and
+  12 months.
+
+To view your emissions data, go to **Admin** > **Carbon footprint**.

sidebars.ts

@@ -53,6 +53,7 @@ const sidebars: SidebarsConfig = {
         'platform/howto/add-project-members',
         'platform/reference/project-member-privileges',
         'platform/howto/manage-unassigned-projects',
+        'platform/concepts/carbon-footprint',
       ],
     },
     {