Document Hedera <--> Axelar Integration

[ed-marquez]

Hedera <--> Axelar integration was announced on Nov. 20:
https://x.com/hederafndn/status/1991533162749653042?s=46&t=11Y-sYadrUJfPVoGh6w7Aw

This integration needs to be added to the Docs section:
https://docs.hedera.com/hedera/open-source-solutions/interoperability-and-bridging

The following resources are currently available to support documentation development:

• https://bright-ambert-2bd.notion.site/Instant-Onboarding-to-Hedera-by-Axelar-ITS-29cc53fccb77809fb056cb9ab4fcbf79
• https://github.com/commonprefix/interchain-token-service/blob/hedera-its/contracts/hedera/README.md
• https://github.com/axelarnetwork/axelar-contract-deployments/tree/main/hedera
• https://drive.google.com/file/d/1y5kHzQM-uDGXedVgjxZUkJtbxfv2BZOn/view?usp=sharing
• https://github.com/skurzyp-arianelabs/axelar-gmp-tests