Creation of UI

[mageirakos]

Motivation

There is the need besides the ask_donkeybot.py script for a UI to be built.
It can be a webapp, a slack bot or some other interface for Rucio users to test the bot and speak to a server.

Data from these questions asked and answers given can be gathered and then used to build an evaluation dataset.

Modification

Deside and create a simple UI for Rucio users to query the bot.
Options:

1. Slack bot
2. Flask webapp
3. other