how to follow standard while developing flutter app for production code example

Example 1: flutter build android release apk small

flutter build apk --split-per-abi

Example 2: flutter build aab

flutter build appbundle

Example 3: flutter publish app

keytool -genkey -v -keystore c:\Users\USER_NAME\key.jks -storetype JKS -keyalg RSA -keysize 2048 -validity 10000 -alias key