add-0G-testnet-network

[udhaykumarbala]

Description

This PR brings adds to the 0G Testnet logo to metamask
0g.ai

Related issues

Fixes:

Manual testing steps

1. Click "Add 0G Testnet" button on https://docs.0g.ai/run-a-node/testnet-information
2. 0G Newton Testnet should have a logo
3. Native token should have a logo same with 0G

Screenshots/Recordings

Before

After

Pre-merge author checklist

• I've followed MetaMask Contributor Docs and MetaMask Extension Coding Standards.
• I've completed the PR template to the best of my ability
• I’ve included tests if applicable
• I’ve documented my code using JSDoc format if applicable
• I’ve applied the right labels on the PR (see labeling guidelines). Not required for external contributors.

Pre-merge reviewer checklist

• I've manually tested the PR (e.g. pull and build branch, run the app, test code being changed).
• I confirm that this PR addresses all acceptance criteria described in the ticket it closes and includes the necessary testing evidence such as recordings and or screenshots.

[github-actions]

CLA Signature Action: All authors have signed the CLA. You may need to manually re-run the blocking PR check if it doesn't pass in a few minutes.

[udhaykumarbala]

I have read the CLA Document and I hereby sign the CLA