fix(ci): correct playwright config paths and add env example files

- Fix testDir path from './src/__tests__/e2e' to './e2e'
- Fix globalSetup path from './src/__tests__/e2e/global.setup' to './e2e/global.setup'
- Create .env.development.example with development database configuration
- Update .gitignore to allow .env.example files to be tracked

playwright.config.ts

@@ -1,7 +1,7 @@
 import { defineConfig, devices } from '@playwright/test';
 
 export default defineConfig({
-  testDir: './src/__tests__/e2e',
+  testDir: './e2e',
   timeout: 30000,
   expect: {
     timeout: 5000
@@ -17,7 +17,7 @@ export default defineConfig({
   // Reporter to use
   reporter: 'html',
   // Global setup and teardown
-  globalSetup: require.resolve('./src/__tests__/e2e/global.setup'),
+  globalSetup: require.resolve('./e2e/global.setup'),
   // Use base URL for relative navigation
   use: {
     baseURL: 'http://localhost:3000',