Allow the sharing of credential when adding to wallet

[alexfigtree]

Describe the bug
When user accepts credential, it cannot be immediately shared

To Reproduce

1. Add credential (mock credentials can be used)
2. Accept, but before clicking done, click on right caret arrow to page where credential cannot be shared:

Expected behavior
When user accepts credential, allow them to navigate to a credential card screen that shows the "share" button in the upper right-hand corner

Screenshots

[alexfigtree]

Need to revisit user flow