#443: Add initial snapcraft configuration

The resulting snap requires to connect USB manually with:
```
sudo snap connect cfclient:raw-usb
```

.gitignore

@@ -10,6 +10,7 @@ src/cfclient/third_party/*
 version.json
 win32install/*.exe
 win32install/cfclient.nsi
+*.snap
 
 # PC client settings
 conf/*

snap/gui/cfclient.desktop

@@ -0,0 +1,5 @@
+[Desktop Entry]
+Name=Crazyflie client
+Exec=cfclient
+Icon=${SNAP}/meta/gui/cfclient.png
+Type=Application

snap/snapcraft.yaml

@@ -0,0 +1,29 @@
+name: cfclient
+version: git
+summary: Crazyflie client
+description: |
+  Crazyflie client
+base: core18
+confinement: strict
+icon: snap/gui/cfclient.png
+
+
+parts:
+  cfclient:
+    plugin: python
+    python-version: python3
+    source: .
+    stage-packages:
+      - python3-pyqt5
+
+apps:
+  cfclient:
+    command: python3 -m cfclient.gui
+    extensions:
+      - kde-neon
+    plugs:
+      - home
+      - opengl
+      - network
+      - network-bind
+      - raw-usb