Refactor Crossterm:

crossterm has the following modules:

• cursor

• style

• input

• screen

• terminal

• Feature Flag
  All of the above features should be behind a feature flag so that you can enable or disable certain features.

• Crossterm Workspace
  Crossterm is going to be split up into 5 crates who will all be useable individually. Crossterm will keep existing as a wrapper of those 5 crates with the feature flags.

• Some bug fixes