Switch Windows setup guide to use Windows Terminal instead of Hyper?

[karlhorky]

Windows Terminal has a bunch of nice new things, eg. emoji (although emoji may also be supported by Hyper)

https://chocolatey.org/packages/microsoft-windows-terminal

If we do this, we have to make sure it integrates well with Git Bash / Cygwin. Eg. the following configuration from Hyper:

shell: 'C:\\Program Files\\Git\\git-cmd.exe',
shellArgs: ['--command=usr/bin/bash.exe', '-l', '-i'],
env: { TERM: 'cygwin' },

Another benefit is that we would remove one more piece of third-party software from the System Setup guide.

[karlhorky]

Looks like these may be some good setup instructions at either of the following here:

• https://stackoverflow.com/questions/56839307/adding-git-bash-to-the-new-windows-terminal/57369284%2357369284
• https://www.commandlinewizardry.com/post/how-to-add-git-bash-to-windows-terminal

[karlhorky]

Probably don't need to do this for the time being - Hyper + Git Bash already supports emoji.