Finished implementing AuthService (Unit/Integration tests, documentation and code)

package-lock.json

@@ -8,6 +8,7 @@
       "name": "chatenium-sdk",
       "version": "1.0.0",
       "dependencies": {
+        "@faker-js/faker": "^10.4.0",
         "axios": "^1.14.0",
         "msw": "^2.12.14"
       },
@@ -53,6 +54,22 @@
         "tslib": "^2.4.0"
       }
     },
+    "node_modules/@faker-js/faker": {
+      "version": "10.4.0",
+      "resolved": "https://registry.npmjs.org/@faker-js/faker/-/faker-10.4.0.tgz",
+      "integrity": "sha512-sDBWI3yLy8EcDzgobvJTWq1MJYzAkQdpjXuPukga9wXonhpMRvd1Izuo2Qgwey2OiEoRIBr35RMU9HJRoOHzpw==",
+      "funding": [
+        {
+          "type": "opencollective",
+          "url": "https://opencollective.com/fakerjs"
+        }
+      ],
+      "license": "MIT",
+      "engines": {
+        "node": "^20.19.0 || ^22.13.0 || ^23.5.0 || >=24.0.0",
+        "npm": ">=10"
+      }
+    },
     "node_modules/@inquirer/ansi": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/@inquirer/ansi/-/ansi-1.0.2.tgz",