feat: add faucet links to testnet page (#623)

src/pages/resources/testnet.mdx

@@ -24,6 +24,21 @@ import UpgradePathTestnet from '/src/upgrade-path-testnet.md'
 
 </div>
 
+<div className="space-y-1 mt-4">
+  ## Faucets
+
+  The following faucets can be used to obtain tokens for testing. Note that some of them may require an existing balance in your wallet.
+
+  - [Polygon](https://mumbaifaucet.com/)
+  - [Ethereum Goerli](https://goerlifaucet.com/)
+  - [Moonbeam](https://faucet.moonbeam.network/)
+  - [Fantom](https://faucet.fantom.network/)
+  - [Paradigm](https://faucet.paradigm.xyz/)
+  - [Lotus](https://faucet.calibration.fildev.network/)
+  - [Kava](https://faucet.kava.io/)
+  - [Celo Alfajores](https://faucet.celo.org/alfajores)
+</div>
+
 <div className="space-y-1 mt-4">
   ### Assets
   <EVMAssets client:only environment="testnet" />