wip: dir organisation, script cleanup

scripts/install/03-ssh.sh

@@ -0,0 +1,9 @@
+#!/usr/bin/env bash
+ssh_target="$HOME/.ssh"
+ssh_key="$ssh_target/id_rsa"
+ssh_pub="$ssh_key.pub"
+if [ ! -f "$ssh_key" ]; then
+    ssh-keygen -t rsa -b 4096 -f "$ssh_key"
+fi
+
+cat "$ssh_pub"