add yarn dx for easier local development (#553)

.env.example

@@ -1,4 +1,6 @@
-DATABASE_URL='postgresql://<user>:<pass>@<db-host>:<db-port>/<db-name>'
+# DATABASE_URL='postgresql://<user>:<pass>@<db-host>:<db-port>/<db-name>'
+DATABASE_URL="postgresql://postgres:@localhost:5432/calendso?schema=public"
+
 GOOGLE_API_CREDENTIALS='secret'
 BASE_URL='http://localhost:3000'
 
@@ -37,4 +39,4 @@ CRON_API_KEY='0cc0e6c35519bba620c9360cfe3e68d0'
 
 # Application Key for symmetric encryption and decryption
 # must be 32 bytes for AES256 encryption algorithm
-CALENDSO_ENCRYPTION_KEY=
+CALENDSO_ENCRYPTION_KEY=