[Delegation Toolkit] Add supported networks (#2094)

* add supported networks

* update file name

* minor fix

Co-authored-by: Alexandra Carrillo <[email protected]>

* update sidebar position

---------

Co-authored-by: Alexandra Carrillo <[email protected]>

Author: AyushBherwani1998

delegation-toolkit/get-started/supported-networks.md

@@ -0,0 +1,33 @@
+---
+title: Supported networks
+sidebar_label: Supported networks
+description: Supported networks for Delegation Toolkit.
+sidebar_position: 5
+---
+
+The following tables display the networks supported by each version of the MetaMask Delegation Toolkit.
+
+If you don't see the network you're looking for, you can request support by emailing [email protected].
+
+## Mainnet networks
+
+| Network Name        | v0.10.1 | v0.10.2 | v0.11.0 |
+| ------------------- | ------- | ------- | ------- |
+| Ethereum            | ✅      | ✅      | ✅      |
+| Polygon             | ✅      | ✅      | ✅      |
+| Binance Smart Chain | ✅      | ✅      | ✅      |
+| Optimism            | ✅      | ✅      | ✅      |
+| Arbitrum            | ✅      | ✅      | ✅      |
+| Linea               | ✅      | ✅      | ✅      |
+| Base                | ✅      | ✅      | ✅      |
+| Gnosis Chain        | ✅      | ✅      | ✅      |
+
+## Testnet networks
+
+| Network Name     | v0.10.1 | v0.10.2 | v0.11.0 |
+| ---------------- | ------- | ------- | ------- |
+| Ethereum Sepolia | ✅      | ✅      | ✅      |
+| Linea Sepolia    | ✅      | ✅      | ✅      |
+| Base Sepolia     | ✅      | ✅      | ✅      |
+| MegaEth          | ✅      | ✅      | ✅      |
+| Gnosis Chiado    | ❌      | ❌      | ✅      |