To add viewModel() support

Add to dependencies

implementation("androidx.lifecycle:lifecycle-viewmodel-compose:2.8.4")

To add rooms support

Official source

Inside plugins:

plugins {
    ...
    id("com.google.devtools.ksp") version "2.0.21-1.0.25"
}

Add to dependencies

implementation("androidx.room:room-runtime:2.6.1")
implementation("androidx.room:room-ktx:2.6.1")
ksp("androidx.room:room-compiler:2.6.1")

Add at end (optional):

ksp {
    arg("room.schemaLocation", "$projectDir/schemas")
}