[docs] Document the hibernation of free projects that are unused

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## Description ✍️
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Tracked in https://github.com/hasura/lux/pull/3904
Part of https://github.com/hasura/lux/issues/4136

## Changelog ✍️

- [x] `CHANGELOG.md` is updated with user-facing content relevant to this PR.
  If no changelog is required, then add the `no-changelog-required` label.

## Affected components ✍️

- [x]  Docs

### Metadata ✍

Does this PR add a new Metadata feature?
- ❎ No

### GraphQL ✍
- ✅ No new GraphQL schema is generated

### Breaking changes ✍

- ✅ No Breaking changes

### Kodiak commit message

#### Commit title
[docs] Document the suspension of free projects that are unused

#### Commit body

Unused free projects are suspended given two previous notices to the owner. A project becomes inactive when it's unused for 3 months.

PR-URL: https://github.com/hasura/graphql-engine-mono/pull/4389
Co-authored-by: Rikin Kachhia <54616969+rikinsk@users.noreply.github.com>
GitOrigin-RevId: e4daed2bba6fe5d965c64c00f2aa4104afe593e7

docs/docs/graphql/cloud/projects/hibernation.mdx

@@ -0,0 +1,52 @@
+---
+description: Cloud Project Hibernation and Reactivation
+keywords:
+  - hasura
+  - docs
+  - project
+  - hibernation
+  - reactivation
+  - inactive
+sidebar_label: Hibernation and reactivation
+sidebar_position: 14.5
+---
+
+import Thumbnail from "@site/src/components/Thumbnail";
+
+# Project Hibernation and Reactivation
+
+## Introduction
+
+As part of our regular maintenance cycle, projects on the free tier that haven't seen any API request activity for the past three months are hibernated after two notices to their owners. Here are some FAQs related to the process and reactivation:
+
+## Frequently Asked Questions
+
+### My Hasura Cloud project is hibernated. What does this mean?
+
+All the metadata and project details are still preserved, but you won't be able to make any API calls to the instance endpoint. However, if you want to keep using your project, you can reactivate it manually from your project's section to continue using Hasura seamlessly.
+
+### How will I know when any of my projects will be hibernated?
+
+After sixty days of inactivity, the project owner will receive the first email informing them about the hibernation of the project in 30 days. 
+
+Fifteen days after that, at the 75-day mark, they will receive a reminder. 
+
+Finally, another fifteen days later, they will receive a confirmation email informing that the project has been hibernated.
+
+### How do I reactivate my hibernated project?
+
+If you are the **project owner**, clicking on the `Reactivate` button of your project's section will allow you to reactivate the project.
+
+<Thumbnail
+  src="/img/graphql/cloud/projects/reactivation-owner.png"
+  alt="Hibernated project as seen by the project owner"
+  width="1199px"
+/>
+
+If you are a **collaborator**, the project's section will ask you to contact the project owner to let them reactivate the project.
+
+<Thumbnail
+  src="/img/graphql/cloud/projects/reactivation-collaborator.png"
+  alt="Hibernated project as seen by a collaborator"
+  width="1199px"
+/>