Build: add release signing config (local) for Play AAB

app/build.gradle.kts

@@ -3,6 +3,8 @@ plugins {
     id("org.jetbrains.kotlin.android")
 }
 
+import java.util.Properties
+
 android {
     namespace = "solutions.tretter.mindmachine"
     compileSdk = 35
@@ -18,7 +20,21 @@ android {
     }
 
     buildTypes {
+        signingConfigs {
+            create("release") {
+                val propsFile = rootProject.file("keystore/upload-keystore.properties")
+                if (propsFile.exists()) {
+                    val props = Properties().apply { propsFile.inputStream().use { this.load(it) } }
+                    storeFile = rootProject.file(props.getProperty("storeFile"))
+                    storePassword = props.getProperty("storePassword")
+                    keyAlias = props.getProperty("keyAlias")
+                    keyPassword = props.getProperty("keyPassword")
+                }
+            }
+        }
+
         release {
+            signingConfig = signingConfigs.getByName("release")
             isMinifyEnabled = false
             proguardFiles(
                 getDefaultProguardFile("proguard-android-optimize.txt"),