Use stdin/stdout on Windows when possible instead of creating a new Console window

[poscat0x04]

Currently, yas opens a new cmd.exe-like console window/buffer even if being executed inside a terminal like Window Terminal. This causes a few issues:

1. Executing yas.exe --help only prints the help message onto the newly created window, which then immediately closes after yas.exe exits, leaving the user with no help messages whatsoever.
2. Essentially the same issue as 1. when your supply yas with incorrect CLI arguments: no message is delivered.
3. The console window does not support copying.

Proposed solution:

Print to stdout by default. Only open a console when you're sure that the program is not already in a terminal.

[Fachep]

没复现

[poscat0x04]

Running yas inside a shell that's being run at administrator's privilege does solve this issue. Though I think yas should work inside an unprivileged shell as well.

[poscat0x04]

This and https://github.com/wormtql/yas/issues/100 are possibly two sides of the same coin.