Add sandboxed atmosphere environment for local testing. This new vm contains everything required to run local test appview including PLC, PDS, Jetstream (listening to single PDS), knot and spindle. I'm using my custom `tngl.boltless.dev` domain which resolves to `127.0.0.1` without any proxy. PLC: plc.tngl.boltless.dev PDS: pds.tngl.boltless.dev Relay: relay.tngl.boltless.dev Jetstream: jetstream.tngl.boltless.dev Knot: knot.tngl.boltless.dev Spindle: spindle.tngl.boltless.dev TLS is supported with caddy service running inside the vm. note: `pds.env` file here is hard copy to be used for contrib/scripts. note: upgraded pds package in order to set email settings Signed-off-by: Seongmin Lee <git@boltless.me>