Stack CLI / RPC support for up command

[subfuzion]

Relates to #162

Adds the amp stack up command and RPC support for up. The CLI command currently only supports the -f, --file option (and it's currently not optional!).

Verification

Create a sample config file. It doesn't matter what's in if for now:

$ touch sample-config.yml

$ make install
# start swarm and amplifier
$ amp stack up -f sample-config.yml

Confirm an ID is printed on the terminal.

[chrisccoy]

👍