docs: cloud add support page (#7143)

Signed-off-by: Artem Navoiev <tenmozes@gmail.com>

docs/victoriametrics-cloud/support.md

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+---
+weight: 2
+title: VictoriaMetrics Cloud Support
+menu:
+  docs:
+    parent: "cloud"
+    weight: 12
+    name: Support
+---
+
+# VictoriaMetrics Cloud Support
+
+## Basic Support
+All offerings include basic support, where we maintain the health of your deployments, perform system upgrades, and proactively contact customers if issues arise.
+
+All changes are logged and visible in the [Audit log](https://cloud.victoriametrics.com/audit).
+
+## How to Reach Support
+To contact support, use the [Contact Support](https://cloud.victoriametrics.com/contact_support) button in the Cloud UI.
+
+We categorize support requests into three types:
+- Issues
+- Feature Requests
+- General Questions
+
+### Common reasons to reach out:
+- Troubleshoot deployment, metrics reading, or writing issues.
+- Report potential bugs in VictoriaMetrics Cloud.
+- Increase the quota (default: 5 single nodes, 2 clusters). If more is needed, submit a support ticket.
+- Request a higher-tier plan or a custom tier.
+- Provide feedback.
+- General questions about the functionality.
+
+## Status Page
+Check the status of VictoriaMetrics Cloud [here](https://status.victoriametrics.com/).
+
+## Maintenance
+Maintenance of your deployments occurs during the maintenance window, which you can set in your deployment settings.  
+VictoriaMetrics handles the infrastructure and deployment maintenance.
+
+For general updates, refer to the [status page](#status-page).
+
+## Enhanced Support and Guidance
+For enhanced support or guidance on VictoriaMetrics and observability, [contact us](https://victoriametrics.com/contact-us/) and see our [plans and features](https://victoriametrics.com/plans-features/)
+
+## Useful Links
+- [Service Level Agreement](https://victoriametrics.com/legal/cloud/terms-of-service/#service-levels)
+- [Terms of Use](https://victoriametrics.com/legal/cloud/terms-of-service/)