Publishing - Show takeover time if claim is being outbid

Nobody has claimed this yet.

## The Issue
Breaking out issues discussed (mostly by me) from https://github.com/lbryio/lbry-app/issues/214

Currently, when taking over a claim held by someone else, users are not notified how long it will take for their claim to successfully complete the takeover process (i.e. resolve at the requested vanity name). They can see this information in the #content channel on Slack, but otherwise its a mystery.

When a user is overbidding on an existing claim, the App should tell them how long it will take until their bid is the highest at the vanity name.

If this requires some daemon side work, let me know and I can open an issue there.

### Expected behaviour
LBRY app shows how long it will take to outbid successfully

### Actual behaviour
No indication that there is a delay in the takeover process

## System Configuration

- LBRY Daemon version: 0.16.1
- LBRY App version: 0.16.0
- LBRY Installation ID:
- Operating system: Windows

## Anything Else

## Screenshots

No source files or tests are named. Start by tracing the app's claim takeover and overbid flow, then identify where the current claim status is presented. Done means the app explains how long an overbid will take to become the highest bid, including any required daemon-side support.

Written by the indexing model from the issue text.