Provide "invitation-pending" list

## Motivation  

[Why is this Epic important? Clearly describe the context and reasons for creating this Epic.]  

- Since there’s no way to check whether user invited one’s vfolder to other user, unless invitee accepts or decline.

## Objective  

[What is the main goal of this Epic? Describe the desired outcome]  

- After user invited any vfolder(s), user can see “invited vfolder name”, “invited time”, “whom to share”

## Expected Sub Issue

[Please list the subtasks you expect.]

-

JIRA Issue: BA-1643