Replace the query of CPU temp from the OpenHardwareMonitor's JSON served
via the network on the Windows host with a call to powershell to instead
read the WMI objects that OpenHardwareMonitor also emits. This is more
robust since powershell.exe is always available and does not require
Windows Defender firewall rules to allow connections from WSL2's VM to
the Windows host.
Update the `system-info` directory with the addition of a `systemd`
service file and an new Linux script to display current CPU temperature
and core/thread utilization. Update `.conduit.yaml` with addition
`apt` dependencies `sysstat` and `jq`. Update the install and remove
scripts to setup and tear down the `systemd` user unit. Lastly, decrease
the `tmux` status line update interval from 5 to 2 seconds.
The `system-info` directory contains scripts and configuration files to
install and remove a `launchd` user agent on macOS which collects
information about the system and outputs it to the file
`~/.cache/tmux/system-info`. This file is then read periodically by
`tmux` and the contents displayed in the status line.
