Actions improvements - JWT, user info, adaptations in actions

[dandelany]

Description

Improvements to action server to support new features:

• Update aerie-actions to support loading adaptations in actions, param descriptions & other features

• TODO before merge: merge & publish [email protected] and update dependency

• User authentication when passing transient secrets to actions
• Extract JWT from secrets requests & pass it into action context, so actions may send authed requests to Hasura/other apps
• Pass username and action run id to actions, per user feedback
• Fix issue with action runs accidentally overwriting action-server's process.env reference by changing how we pass global context down to actions.
• Separate app.js from server.js for better testability, add test for authenticating user JWT

[dandelany]

Thanks @Mythicaeda I addressed all your notes, with one outstanding on-the-fence question i'll make a decision about tomorrow, ready for another look.

Ignore the failing tests for the moment - they were passing and will pass again after I publish a new version of the aerie-actions API with the updated config etc - I'll make sure they pass before merging.

[Mythicaeda]

Presuming tests start passing once the aerie-actions code has been updated, this LGTM