Move Snap and Synology packaging to new pkg dir

pkg/snap/snapcraft.yaml

@@ -0,0 +1,88 @@
+name: zerotier
+summary: Securely connect any device, anywhere.
+description: |
+
+  ZeroTier is a software-based managed Ethernet switch for planet Earth. Use it to connect your
+  desktop clients, servers, phones, NAS, or even individual applications (using our SDK).
+
+  This snap contains ZeroTier One, a service that provides ZeroTier network connectivity and
+  makes joining virtual networks as easy as joining IRC or Slack channels. Apps for Android
+  and iOS are available for free in the Google Play and Apple app stores.
+
+  ZeroTier eliminates the LAN/WAN distinction and makes VPNs, tunnels, proxies, and other kludges
+  arising from the inflexible nature of physical networks obsolete. Everything is encrypted
+  end-to-end and traffic takes the most direct (peer to peer) path available.
+
+  Install (be sure to use sudo)
+
+    sudo snap install zerotier
+
+  Join your network
+
+    sudo zerotier join <nwid>
+    sudo zerotier status
+
+  Approve your new node in ZeroTier Central (https://my.zerotier.com)! Welcome online!
+
+adopt-info: one
+confinement: strict
+grade: stable
+base: core18
+
+apps:
+  one:
+    # Add -U to prevent attempting to drop privileges since snaps have their
+    # own containment mechanism. Otherwise, if a user named "zerotier-one"
+    # exists on the system, the setgid or related calls will fail.
+    command: usr/sbin/zerotier-one -U
+    daemon: simple
+    plugs:
+      - network
+      - network-bind
+      - network-control
+
+  # For backwards compatibility with old package (e.g. zerotier.cli)
+  # Should be removed someday
+  cli:
+    command: usr/sbin/zerotier-cli
+    plugs:
+      - network
+
+  zerotier:
+    command: usr/sbin/zerotier-cli
+    plugs:
+      - network
+
+  idtool:
+    command: usr/sbin/zerotier-idtool
+    plugs:
+      - network
+
+layout:
+  /var/lib/zerotier-one:
+    bind: $SNAP_COMMON
+
+parts:
+  one:
+    source: ./
+    plugin: dump
+    organize:
+      zerotier-one : usr/sbin/zerotier-one
+      zerotier-cli : usr/sbin/zerotier-cli
+      zerotier-idtool : usr/sbin/zerotier-idtool
+    filesets:
+      binaries:
+        - usr/sbin/zerotier-one
+        - usr/sbin/zerotier-cli
+        - usr/sbin/zerotier-idtool
+    prime:
+      - $binaries
+    override-build: |
+      snapcraftctl build
+      # Grab the version string from the newly-compiled binary.
+      snapcraftctl set-version "$(./zerotier-one -v)"
+slots:
+  zerotier-control:
+    interface: content
+    read:
+      - $SNAP_COMMON