feat: Add digital asset endpoints (Crypto, Forex)#1084

hydrosquall wants to merge 1 commit intocameron.yickfeat/openapi-02-stock-markethydrosquall/tiingo-python:cameron.yickfeat/openapi-02-stock-marketfrom

cameron.yickfeat/openapi-03-digital-assetshydrosquall/tiingo-python:cameron.yickfeat/openapi-03-digital-assetsCopy head branch name to clipboard