I am currently bulding an app that integrates hubspot with another app. In the other app requirements the API key is needed for each request. The integration app should mostly be used in workflows and for now the only solution I see is sending the key in each action which seems a bit tedious for the client cause the client would have to fill in their API key every time. Is there a possibility to save the API key somewhere in the app or is it possible to send it from hubspot to our app in requests?