Add booking checkout and webhook coverage

vitest.config.ts

@@ -0,0 +1,19 @@
+import path from 'node:path';
+import { defineConfig } from 'vitest/config';
+
+export default defineConfig({
+  resolve: {
+    alias: {
+      '@': path.resolve(__dirname, 'src'),
+    },
+  },
+  esbuild: {
+    jsx: 'automatic',
+  },
+  test: {
+    environment: 'node',
+    restoreMocks: true,
+    clearMocks: true,
+    include: ['src/**/*.test.ts', 'src/**/*.test.tsx'],
+  },
+});