feat: maskWebhookUrl helper, webhook payload builder, structured logs, and wallet holdings endpoint#453

Chucks1093 merged 4 commits into

accesslayerorg:mainaccesslayerorg/accesslayer-server:mainfrom

chinelo002:feat/webhook-helpers-holdings-testchinelo002/accesslayer-server:feat/webhook-helpers-holdings-testCopy head branch name to clipboard