Provisioning: add Qt Gradle Plugin to the Gradle cache project

Add Qt Gradle plugin to the provisioning Gradle cache to avoid
potential fetching on each build in qtdeclarative tests.

Pick-to: 6.12 6.11 6.8
Fixes: QTBUG-147567
Change-Id: I2ac5ef09b958e50d808a024479ee6d4ed111aff0
Reviewed-by: Toni Saario <toni.saario@qt.io>

coin/provisioning/common/shared/gradle/project/README.md

@@ -9,6 +9,7 @@ Caches dependencies for:
 - `com.android.library`: used by Qt JAR builds
 - `android.dynamic.feature`: used by Feature Delivery tests
 - `org.jetbrains.kotlin.android`: used by some Qt modules
+- `org.qtproject.qt.gradleplugin`: used by Qt for Android Studio projects
 - AndroidX: used by app builds
 
 These files should be updated each time Qt bumps the supported Android or

coin/provisioning/common/shared/gradle/project/build.gradle

@@ -2,4 +2,5 @@ plugins {
     alias(libs.plugins.android.application) apply false
     alias(libs.plugins.android.library) apply false
     alias(libs.plugins.android.dynamic.feature) apply false
+    alias(libs.plugins.qt.gradle.plugin) apply false
 }

coin/provisioning/common/shared/gradle/project/gradle/libs.versions.toml

@@ -5,6 +5,7 @@ appcompat = "1.7.1"
 material = "1.13.0"
 junit = "4.13.2"
 play-feature-delivery = "2.1.0"
+qt-gradle-plugin = "1.4"
 
 [libraries]
 core = { group = "androidx.core", name = "core", version.ref = "core" }
@@ -17,3 +18,4 @@ play-feature-delivery = { module = "com.google.android.play:feature-delivery", v
 android-application = { id = "com.android.application", version.ref = "agp" }
 android-library = { id = "com.android.library", version.ref = "agp" }
 android-dynamic-feature = { id = "com.android.dynamic-feature", version.ref = "agp" }
+qt-gradle-plugin = { id = "org.qtproject.qt.gradleplugin", version.ref = "qt-gradle-plugin" }