Adding OpenAPI documentation for the pusher.

The pusher now exposes a "/openapi" endpoint and a "/swagger-ui/" endpoint.

pusher/package.json

@@ -62,13 +62,17 @@
     "@types/jasmine": "^3.5.10",
     "@types/jsonwebtoken": "^8.3.8",
     "@types/mkdirp": "^1.0.1",
+    "@types/swagger-jsdoc": "^6.0.1",
     "@types/uuidv4": "^5.0.0",
     "@typescript-eslint/eslint-plugin": "^2.26.0",
     "@typescript-eslint/parser": "^2.26.0",
     "eslint": "^6.8.0",
     "jasmine": "^3.5.0",
     "lint-staged": "^11.0.0",
+    "live-directory": "^2.3.2",
     "prettier": "^2.3.1",
+    "swagger-jsdoc": "^6.1.0",
+    "swagger-ui-dist": "^4.5.1",
     "ts-node-dev": "^1.1.8",
     "typescript": "^4.5.2"
   },
@@ -77,4 +81,4 @@
       "prettier --write"
     ]
   }
-}
+}