feat: add custom deployments guide

docs/contracts/v2/guides/10-custom-deployments.md

@@ -0,0 +1,20 @@
+---
+id: "custom-deployments"
+sidebar_position: 10
+title: "Custom Deployments"
+---
+
+:::info
+
+Due to limited bandwidth, we are not able to deploy the Sablier Protocol on every EVM chain. However, we are happy to
+consider your project if you fill out this [form](https://forms.gle/kHKq7RSZ993WVoB2A) and meet the requirements below.
+
+:::
+
+## Requirements
+
+- Blockchain explorer
+- Documentation site
+- Bridge, with step-by-step instructions for how to bridge ETH and ERC-20 tokens to the target chain
+- GraphQL solution, e.g. a deployment of [The Graph](https://thegraph.com/)
+- Functional JSON-RPC endpoint, ideally listed on [ChainList](https://chainlist.org/)