Refactored to typescript & more consistent code

Updated how we interface with figlet and unified error handling &
response.

.eslintrc.json

@@ -0,0 +1,31 @@
+{
+  "root": true,
+  "parserOptions": {
+    "parser": "@typescript-eslint/parser",
+    "ecmaVersion": 2020,
+    "sourceType": "module"
+  },
+  "extends": [
+    "eslint-config-airbnb-base",
+    "plugin:@typescript-eslint/recommended"
+  ],
+  "plugins": ["@typescript-eslint"],
+  "rules": {
+    "lines-between-class-members": [
+      "error",
+      "always",
+      { "exceptAfterSingleLine": true }
+    ],
+    "max-classes-per-file": 1,
+    "no-empty": [
+      2,
+      {
+        "allowEmptyCatch": true
+      }
+    ],
+    "no-promise-executor-return": 1,
+    "no-shadow": "off",
+    "no-underscore-dangle": "off",
+    "@typescript-eslint/no-var-requires": "off"
+  }
+}