chore: Add Android SDK project skeleton

Build infrastructure for Android SDK library:
- Gradle build configuration with Kotlin 2.2, Android Gradle Plugin 8.13
- Version catalog with dependencies (Ktor, kotlinx.serialization, testing)
- Code quality: Detekt, ktlint, JUnit 5 + Robolectric
- Maven Central publishing configuration
- Sample app module structure
- Minimal stub files for compilation

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <[email protected]>

Author: oschwald

build.gradle.kts

@@ -0,0 +1,18 @@
+// Top-level build file where you can add configuration options common to all sub-projects/modules.
+plugins {
+    alias(libs.plugins.android.application) apply false
+    alias(libs.plugins.android.library) apply false
+    alias(libs.plugins.kotlin.android) apply false
+    alias(libs.plugins.kotlin.serialization) apply false
+    alias(libs.plugins.dokka) apply false
+    alias(libs.plugins.detekt) apply false
+}
+
+allprojects {
+    group = "com.maxmind.device"
+    version = "0.1.0-SNAPSHOT"
+}
+
+tasks.register("clean", Delete::class) {
+    delete(rootProject.layout.buildDirectory)
+}