add no-ui file-transfer

[nick1udwig]

Problem

We need more templates. #69

Solution

Add file_transfer.

Docs Update

Corresponding docs PR

Notes

Not currently working as of 54b1f25. See https://gist.github.com/hosted-fornet/9a604116ea70adae32cab20509cb0bbb

Testing looks like

# Start fake.os
kit f

# Start fake2.os (different terminal)
kit f -h /tmp/kinode-fake-node-2 -p 8081 -f fake2.os

# Start file_transfer on each
kit n file_transfer -t file_transfer
kit b file_transfer
kit s file_transfer
kit s file_transfer -p 8081

# On fake.os, try to `ListFiles`
m fake2.os@foo:foo:template.os "ListFiles"

EDIT: It is working if you use the proper m flags, see comments below.

[nick1udwig]

m fake2.os@foo:foo:template.os "ListFiles" -a 5

works. h/t @tadad

[nick1udwig]

m our@foo:foo:template.os '{"Download": {"name": "Great Is Thy Faithfulness.m4a", "target": "fake2.os@foo:foo:template.os"}}'