termuxvoid/apkgen-cli ? reverse-engineered prompt

Build me a simple Termux command line tool that helps me generate Android app projects from a local template and then build APKs from them.

I want to be able to run something like apkgen create myapp, choose an app name and package name, and have it copy a starter template into a new folder, rename things properly, and set up the source layout for me. It should support Java by default, and also let me make Kotlin, Flutter, native C, or native C plus plus projects with a flag.

After that, I want build commands for a debug APK and an unsigned release APK, plus a Flutter build option if needed. It should also have a clean command to remove build files and a help screen that explains how to use it. Keep it friendly for Termux users, and make sure the output APKs end up in a clear build output folder. If you need to check current Android build details online, feel free to look them up.