feature: Adds backend system and basic API.

This adds the backend API, as well as backend infrastructure, including
autostarting and basic communication between the Goroutine + Application.

backend/build.sh

@@ -0,0 +1,20 @@
+#!/usr/bin/env bash
+pushd sshbackend
+go build .
+strip sshbackend
+popd
+
+pushd dummybackend
+go build .
+strip dummybackend
+popd
+
+pushd externalbackendlauncher
+go build .
+strip externalbackendlauncher
+popd
+
+pushd api
+go build .
+strip api
+popd