Improvement to Cloud and Hybrid Cloud docs

This significantly improves our cloud and hybrid cloud docs:

* Adds screenshots
* Better structure
* More information about payments, including stripe and azure marketplace
* Better cluster creation docs
* Account setup and invitation docs
* Monitoring docs
* Cluster upgrade docs
* Support docs
* Removed duplications

qdrant-landing/content/documentation/cloud/support.md

@@ -0,0 +1,15 @@
+---
+title: Support
+weight: 99
+aliases:
+---
+
+# Cloud Support & Troubleshooting
+
+All Qdrant Cloud users are welcome to join our [Discord community](https://qdrant.to/discord/). Our Support Engineers are available to help you anytime.
+
+![Discord](/documentation/cloud/discord.png)
+
+Paid customers can also contact support directly. Links to the support portal are available in the Qdrant Cloud Console.
+
+![Support Portal](/documentation/cloud/support-portal.png)