Add Chainlink CCIP to Cross-chain section (#240)

* Add Chainlink CCIP to Cross-chain section

* Update cross-chain.md

* Update cross-chain.md

* Update cross-chain.md

apps/base-docs/docs/tools/cross-chain.md

@@ -11,6 +11,8 @@ keywords:
     omnichain,
     omni-chain,
     superchain,
+    Chainlink CCIP,
+    CCIP,
     LayerZero,
     Axelar,
     Wormhole,
@@ -44,6 +46,19 @@ To view current transactions and live stats about the Axelar network please visi
 
 ---
 
+## Chainlink CCIP
+
+[Chainlink CCIP](https://chain.link/cross-chain) is a secure interoperability protocol that allows for securely sending messages, transfering tokens, and initiating actions across different blockchains.
+
+To get started with integrating Chainlink CCIP in your Base project, visit the Chainlink CCIP [documentation](https://docs.chain.link/ccip)
+
+#### Supported Networks
+
+- [Base Mainnet](https://docs.chain.link/ccip/supported-networks/v1_0_0/mainnet#base-mainnet)
+- [Base Goerli](https://docs.chain.link/ccip/supported-networks/v1_2_0/testnet) (Testnet)
+
+---
+
 ## LayerZero
 
 [LayerZero](https://layerzero.network/) is an omnichain interoperability protocol that enables cross-chain messaging. Applications built on Base can use the LayerZero protocol to connect to 35+ supported blockchains seamlessly.