Staking API (2023-10-10)

➕ We've added suppport for two new protocols:

• Cosmos staking is now supported.
• Learn more in the Cosmos Staking Docs.
• Avalanche staking is now supported.
• Learn more in the Avalanche Staking Docs.

🛠️ We've made some improvements:

• [Ethereum] Enhanced error handling for exit endpoints.
• [Solana] Added better validation of the /stake-intents endpoint to only check if the plan ID is valid when the validator address is not present.