In situations like timeouts, windows will hang when attempting to close the test process streams. In this case, we have to force kill the test process externally. This is the same process as force killing hardhat nodes after they are already terminated, but windows refuses hangs when closing their process streams. This commit creates a forceKillProcess utility that allows a process to be killed by its process name and matching commandline criteria, like TestId (for test process) or --port (for hardhat)
On windows, termination of hardhat processes would not actually kill the process, and then closing the process' streams would then hang the calling nim process. To get around this, the process is now killed externally using a script, winkillhardhat.sh. This script first queries open processes by inspecting the command line value of all "node.exe" processes, searching for "vendor/codex-contracts-eth" and for the port parameter it was started with. After querying, the process is killed using the `Stop-Process` powershell command (passing the pid of the windows process).
