chore(unit-test): add mokkery for better kmp mocking/verify integration

plugins {

    id(ThunderbirdPlugins.Library.androidCompose)

    alias(libs.plugins.dev.mokkery)

}

android {

minidns = "1.0.5"

mockito = "5.18.0"

mockitoKotlin = "5.4.0"

mokkery = "2.8.0"

moshi = "1.15.2"

mozillaAndroidComponents = "139.0.4"

okhttp = "4.12.0"

kotlin-serialization = { id = "org.jetbrains.kotlin.plugin.serialization", version.ref = "kotlinBom" }

ksp = { id = "com.google.devtools.ksp", version.ref = "kotlinKsp" }

spotless = { id = "com.diffplug.spotless", version.ref = "spotlessPlugin" }

dev-mokkery = { id = "dev.mokkery", version.ref = "mokkery" }

[libraries]

android-billing = { module = "com.android.billingclient:billing", version.ref = "androidBilling" }