Implement a File convergence layer

[EpicKiwi]

Implement a convergence layer abed on a shared folder between nodes

• Add a new FileCLA
  • Should associate a folder for each contact
  • Should write bundle routed bundle into contact's folder
  • Should watch contact folder for new bundles to inject
  • Should support BPv7 bundles
  • Should support BPv6 bundles
  • Should delete expired bundles
• Document FileCLA protocol and how to read/write bundle in folder
• Create an external tool for auto-mounting and connecting of removable drives (https://github.com/EpicKiwi/archipel-file-carrier)