get jwt from request param

[lohanidamodar]

What does this PR do?

• Accept JWT also as request param ?jwt, intended for resources such as file previews and downloads

Test Plan

• Updated relevant test to include test for JWT sent as request param

Related PRs and Issues

• (Related PR or issue)

Checklist

• Have you read the Contributing Guidelines on issues?
• If the PR includes a change to an API's metadata (desc, label, params, etc.), does it also include updated API specs and example docs?

[eldadfux]

Passing or sharing a link with JWT will give full access to the user account, we should either create a limited JWT for that or go with dedicated file tokens instead.

[lohanidamodar]

Closing this for now!