add signale library

package.json

@@ -9,6 +9,7 @@
   "private": false,
   "devDependencies": {
     "@types/node": "^13.11.0",
+    "@types/signale": "^1.4.1",
     "@types/yaml": "^1.2.0",
     "@typescript-eslint/eslint-plugin": "^2.27.0",
     "@typescript-eslint/parser": "^2.27.0",
@@ -21,6 +22,7 @@
     "eris": "^0.11.2",
     "moment": "^2.24.0",
     "mongoose": "^5.9.7",
+    "signale": "^1.4.0",
     "yaml": "^1.8.3"
   }
 }