Create a dropdown box for selecting which Coin we need data of

[Blankscreen-exe]

Right below the title, add an 'options' box (rectangular) which would contain a dropdown menu for selecting coin name.

Once the name is selected the user will then click on the 'start generating' button (right side of the dropdown) to start the crypto data fetching script in a thread.

Use issue #2 to give full control to user as to how many threads they want to run.