• Requires Create a "conpty" framework package to bundle up the PseudoConsole APIs and conhost #1130

Making the switch from spawning conhost directly to using CreatePseudoConsole and otherwise hosting a pseudoconsole session affords us a number of benefits.

• Fixes Bug Report: The conhost command line is not properly escaped #1090
• Isolates Windows Terminal's understanding of conhost's internals
• Allows us to CreateProcess the shell directly and track its exit independent from that of the pseudoconsole host
  • which allows us to manage the shell and the pseudoconsole host in separate jobs