Add snap support (#60)

* Initial app daemon implementation

* Pass script path to child bridge processes

* Change WebSocket server port

* Fix error sending message whilst WebSocket connection is closing

* Initial ext daemon connection implementation

package-lock.json

@@ -2,6 +2,18 @@
     "requires": true,
     "lockfileVersion": 1,
     "dependencies": {
+        "@types/events": {
+            "version": "3.0.0",
+            "resolved": "https://registry.npmjs.org/@types/events/-/events-3.0.0.tgz",
+            "integrity": "sha512-EaObqwIvayI5a8dCzhFrjKzVwKLxjoG9T6Ppd5CEo07LRKfQ8Yokw54r5+Wq7FaBQ+yXRvQAYPrHwya1/UFt9g==",
+            "dev": true
+        },
+        "@types/minimist": {
+            "version": "1.2.0",
+            "resolved": "https://registry.npmjs.org/@types/minimist/-/minimist-1.2.0.tgz",
+            "integrity": "sha1-aaI6OtKcrwCX8G7aWbNh7i8GOfY=",
+            "dev": true
+        },
         "@types/node": {
             "version": "11.9.5",
             "resolved": "https://registry.npmjs.org/@types/node/-/node-11.9.5.tgz",
@@ -23,6 +35,16 @@
                 "@types/node": "*"
             }
         },
+        "@types/ws": {
+            "version": "6.0.1",
+            "resolved": "https://registry.npmjs.org/@types/ws/-/ws-6.0.1.tgz",
+            "integrity": "sha512-EzH8k1gyZ4xih/MaZTXwT2xOkPiIMSrhQ9b8wrlX88L0T02eYsddatQlwVFlEPyEqV0ChpdpNnE51QPH6NVT4Q==",
+            "dev": true,
+            "requires": {
+                "@types/events": "*",
+                "@types/node": "*"
+            }
+        },
         "ansi-regex": {
             "version": "3.0.0",
             "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-3.0.0.tgz",