feat(sasjs-tests): update tests, use vite and minimal deps

sasjs-tests/src/config/loader.ts

@@ -0,0 +1,14 @@
+import type { AppConfig } from '../types'
+
+export interface ConfigWithCredentials extends AppConfig {
+  userName?: string
+  password?: string
+}
+
+export async function loadConfig(): Promise<ConfigWithCredentials> {
+  const response = await fetch('config.json')
+  if (!response.ok) {
+    throw new Error('Failed to load config.json')
+  }
+  return response.json()
+}