Merge pull request 0xPolygon#131 from 0xPolygon/km/cdk-testnet

CDK/Add testnet page

Author: 0xgraciegrace

.gitignore

@@ -1,4 +1,4 @@
-.vscode/
+.vscode
 .code
 .idea
 site/

.vscode/settings.json

@@ -0,0 +1,15 @@
+## Stavanger
+
+The [CDK Stavanger testnet](https://polygon.technology/cdk-stavanger-testnet) is a validium testnet based on Sepolia.
+
+- Add the RPC network details to your wallet by navigating to the add network input and entering the data as given in the table below.
+- Use the faucet to get test ETH.
+- Bridge assets from Sepolia to Stavanger using the bridge.
+- Confirm your transactions with the block explorer.
+
+| Use case | URL | Usage |
+| ------- | ----------- | --------- | 
+| JSON RPC | https://sn2-stavanger-rpc.eu-north-2.gateway.fm | Make remote procedure calls to the CDK testnet. |
+| Faucet | https://sn2-stavanger-faucet.eu-north-2.gateway.fm | Get testnet tokens. |
+| Bridge | https://sn2-stavanger-bridge.eu-north-2.gateway.fm | Bridge tokens from Sepolia. |
+| Block explorer | https://sn2-stavanger-blockscout.eu-north-2.gateway.fm | Confirm transactions with the explorer. |

docs/cdk/get-started/connect-testnet.md

@@ -9,12 +9,19 @@ Follow the steps below to deploy a CDK validium instance.
 
 ## 1. Deploy validium-specific contracts
 
+!!! important
+    - Follow this step if you are deploying to a public testnet.
+    - For a local deploy, follow step 2 instead which deploys a local L1 network plus CDK contracts.
+
 First, deploy the relevant contracts.
 
 Follow the steps in the [CDK validium contracts repository's README](https://github.com/0xPolygon/cdk-validium-contracts).
 
 ## 2. Run the CDK validium node
 
+!!! important
+    - If you are deploying to a public testnet, follow the previous step 1.
+
 Next, set up and run the CDK validium node.
 
 Follow the instructions in the [CDK validium node repository's README](https://github.com/0xPolygon/cdk-validium-node).

docs/cdk/get-started/deploy-validium.md

@@ -43,6 +43,7 @@ nav:
       - CDK: cdk/index.md
       - Overview: cdk/overview.md
       - Get started:
+        - Connect testnet: cdk/get-started/connect-testnet.md
         - Quickstart:
           - Validium: cdk/get-started/quickstart-validium.md
           - Rollup: cdk/get-started/quickstart-rollup.md
@@ -58,7 +59,6 @@ nav:
         - Rollup: cdk/concepts/rollup.md
         - Validium: cdk/concepts/validium.md
         - Data availability: cdk/concepts/dac.md
-     # - API/SDK:
       - Additional resources:
         - CDK repos: cdk/resources/cdk-repo-reference.md
   - zkEVM: