Windows support

[pavdmyt]

In continuation to discussion on windows support for yaspin started in #32

Minimum plan towards Windows support:

• apply the patch for handling signals
• use vistir/cursor module for cursor support
• implement (or find the replacement for) termcolor features in Windows environment
• unittests for all yaspin features under Windows
• CI pipeline for tests under Windows

[techalchemy]

• It is definitely possible to retain the current API using colorama, I preserved the API for use in vistir with a wrapper and some tweaks to the implementation, so it shouldn't be a problem at all

[pavdmyt]

Related: #24

[oz123]

pipenv is currently getting new wind. I am currently helping to maintain pipenv, and I would be happy if we could upstream pipenv`s patches to yaspin. Would we be able to do so? Is there any way we can help you with the adoption of these patches?
@pavdmyt @matteius

[pavdmyt]

Hi @oz123

What are these patches about? Generally, I'm open for the new PRs.

[oz123]

This are patches that fix colors in Windows.

[pavdmyt]

@oz123 yes, I'm open to improve Windows support. Feel free to submit PRs.