DevOps Workflow Improvements

- `VirtualBox-Wrapper.ps1` now takes 'up' or 'down' as opposed to a machine name. This allows start/stop of a virtualmachine.
- `VirtualBox-Wrapper.ps1` now relies on a gitignored `localenv.json` to work.
- `VirtualBox-Wrapper.ps1` can also optionally monitor the log file generated from the serial adapter in VirtualBox.
- `readme.md` updated to provide instructions on how to populate the `localenv.json` file.
- `tasks.json` updated to have a "Clean" task to --remove-orphans, the Build task depends on this.
- `tasks.json` updated to have a "Close VirtualBox" task, this runs the `virtualbox-wrapper.ps1` in 'down' mode. The Build task depends on this.
- `launch.json` updated to run the `VirtualBox-Wrapper.ps1` with the "-Command up" argument, instead of machine name.
- .gitignore updated to ignore any instances of `localenv.json`.

# Conflicts:
#	.gitignore

.gitignore

@@ -10,3 +10,4 @@
 /*.sh~
 /*.img
 src/include/asuro.pas
+localenv.json