Need a way to click to join a pathways group

[bsommardahl]

I need a page in the site to allow someone to add their own email address to a pathway group. Ideally, the url would be something like: https://the-url.com/pathway-group/82jkldy2765sdj/join -- Show the name and description of the group along with a textbox for email address. Re-use the saved email if possible, click "Join" and then they are added to the group, told thanks, and button disappears.

One issue we have seen is that Badgr Pathways does not currently have a "public api" for pathways. BUT, if you observe the network traffic while using the pathways app, you can clearly see a backend API. Perhaps we can use that API to accomplish this task.

I noticed they send a bearer token on their pathway api requests. If that's the same token that we already use, then we're good to go!