Make chatbot which give information about blockchain

[Ronnieraj37]

This is an old issues raised by Nikunj Rohit (issue 54)

Describe the purpose
for blockchain-related learning, the purpose integrates a chatbot that gives information on anything related to blockchain.
Possible Implementation
-> add button which pop on click
-> make chatbot pop up component
-> integrate it with API and fetch the response and show it to the user.
Additional context
(Add any other context about the problem here.)

[Ronnieraj37]

Completed in #64