When neither is specified, if you open a directory you get a new
workspace, otherwise files are added to your existing workspace.
With --new files are always opened in a new workspace
With --add directories are always added to an existing workspace
Fixes#9076Fixes#4861Fixes#5370
Zed now is able to behave as if it's being started from CLI
(`ZED_FORCE_CLI_MODE` env var)
Zed CLI accepts regular binary file path into `-b` parameter (only *.app before),
and tries to start it as Zed editor with `ZED_FORCE_CLI_MODE` env var
and other params needed.
We still aren't handling CLI requests in the app, but this lays the foundation for bi-directional communication.
Co-Authored-By: Max Brunsfeld <maxbrunsfeld@gmail.com>