adb: win32: improve console output on Windows 10

Use Windows 10's improved virtual terminal emulation to handle more
terminal sequences, to fix console resize artifacts, and to fix issues
with the last column.

`top' and `more' work well now.

Use a sensible default TERM value of xterm-256color.

Test: manual on Windows 10
Bug: https://issuetracker.google.com/issues/37081235



Change-Id: If6612f3bb7db1ecaaa4b7930c9e54075ba7abb3f
Signed-off-by: Spencer Low <CompareAndSwap@gmail.com>