Make Smapi responsible for turning app token into encrypted jwt (#71)

package.json

@@ -9,6 +9,7 @@
     "@svrooij/sonos": "^2.4.0",
     "@types/express": "^4.17.13",
     "@types/fs-extra": "^9.0.13",
+    "@types/jsonwebtoken": "^8.5.5",
     "@types/morgan": "^1.9.3",
     "@types/node": "^16.7.13",
     "@types/sharp": "^0.28.6",
@@ -20,6 +21,7 @@
     "express": "^4.17.1",
     "fp-ts": "^2.11.1",
     "fs-extra": "^10.0.0",
+    "jsonwebtoken": "^8.5.1",
     "libxmljs2": "^0.28.0",
     "morgan": "^1.10.0",
     "node-html-parser": "^4.1.4",