initialize git, basic setup for crm

.env.example

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+PORT=5000
+NODE_ENV=development
+
+# Database Configuration
+DB_HOST=localhost
+DB_PORT=5432
+DB_USER=admin
+DB_PASSWORD=heslo123
+DB_NAME=crm
+
+# JWT Configuration
+JWT_SECRET=your-super-secret-jwt-key-change-this-in-production
+JWT_EXPIRES_IN=1h
+JWT_REFRESH_SECRET=your-super-secret-refresh-key-change-this-in-production
+JWT_REFRESH_EXPIRES_IN=7d
+
+# Better Auth Configuration
+BETTER_AUTH_SECRET=your-super-secret-better-auth-key-change-this-in-production
+BETTER_AUTH_URL=http://localhost:5000
+
+# JMAP Email Configuration
+JMAP_SERVER=https://mail.truemail.sk/jmap/
+JMAP_USERNAME=info1_test@truemail.sk
+JMAP_PASSWORD=info1
+JMAP_ACCOUNT_ID=ba
+
+# Security
+BCRYPT_ROUNDS=12
+RATE_LIMIT_WINDOW_MS=900000
+RATE_LIMIT_MAX_REQUESTS=100
+RATE_LIMIT_LOGIN_MAX=5
+
+# CORS
+CORS_ORIGIN=http://localhost:3000