Replace winconsole dependency with winapi

[kurtlawrence]

PR that changes the set_virtual_terminal function to use the crate winapi over winconsole.

Motivation

• Reduce (transitive) dependency count
• Reduce dependency size (fewer winapi features)

Changes

Inspired by @noxabellus comment in #56, uses winapi calls to set virtual terminal.
This changes the function signature to return a void rather than a result. I would like some feedback whether this is considered a breaking change given we are reducing the return type. Does this mean major bump or can we just bump minor.

Additional Notes

This will effectively negate #60 and #66.

[kurtlawrence]

To further reduce any possible breaking changes, the set_virtual_terminal returns a dummy Result<(), ()> which is always Ok(()).