Add referrer with utm_source to task app installation Intents

import androidx.fragment.app.viewModels

import androidx.lifecycle.MutableLiveData

import androidx.lifecycle.ViewModel

import at.bitfire.davdroid.BuildConfig

import at.bitfire.davdroid.PackageChangedReceiver

import at.bitfire.davdroid.R

import at.bitfire.davdroid.databinding.ActivityTasksBinding

    }

    private fun installApp(packageName: String) {

        val uri = Uri.parse("market://details?id=$packageName")

        val uri = Uri.parse("market://details?id=$packageName&referrer=" +

                Uri.encode("utm_source=" + BuildConfig.APPLICATION_ID))

        val intent = Intent(Intent.ACTION_VIEW, uri)

        if (intent.resolveActivity(requireActivity().packageManager) != null)

            startActivity(intent)