How to import offical controls for New Vanilla Mobile:
Open Zalith launcher
Tap "Open main directory"
Navigate to "/storage/emulated/0/Android/data/com.movtery.zalithlauncher/files/.minecraft/versions/New Vanilla/Extras", or click through ".minecraft">"versions">"New Vanilla" (or whatever the instance is called)>"Extras"
Tap "New Vanilla Control Layout.json"
Tap "Copy"
Tap the "Home" button (not androids home button, the home button in the top right of the zalith launcher app)
Tap "Manage Control Layouts"
Tap the middle button in the row in the bottom right (it looks like a clipboard with a arrow on the bottom right of the icon pointing right)
p.s. I'm sorry this update was delayed, it was delayed because:
I didn't want to rush things
I don't know much about the java on mobile scenes and what the culture/preferences of the community. so feedback would be greatly appreciated, preferably on the Discord (link for transparency: https://discord.gg/Uc37BnuM)