Complete Kotlin compatibility fixes and dependency updates

- Update kotlinx-coroutines from 1.9.0 to 1.10.1 in all modules
- Add legacy settings.gradle file for CI compatibility
- Update kotlin-coroutines in app/build.gradle.kts
- Update kotlin-coroutines in torrentengine/build.gradle.kts

This resolves all remaining Kotlin version incompatibility issues:
- Main Kotlin plugin: 1.9.24 → 2.1.0 (done previously)
- Coroutines library: 1.9.0 → 1.10.1 (this commit)
- CI compatibility: added settings.gradle alongside settings.gradle.kts

Build now passes Kotlin compatibility checks and only fails on
NDK license issues which are environment-specific, not code issues.

android/settings.gradle

@@ -0,0 +1,33 @@
+// Legacy settings.gradle file for CI compatibility
+// Main configuration is in settings.gradle.kts
+
+pluginManagement {
+    def flutterSdkPath = {
+        def properties = new Properties()
+        file("local.properties").withInputStream { properties.load(it) }
+        def flutterSdkPath = properties.getProperty("flutter.sdk")
+        assert flutterSdkPath != null, "flutter.sdk not set in local.properties"
+        return flutterSdkPath
+    }()
+
+    includeBuild("$flutterSdkPath/packages/flutter_tools/gradle")
+
+    repositories {
+        google()
+        mavenCentral()
+        gradlePluginPortal()
+    }
+}
+
+plugins {
+    id "dev.flutter.flutter-plugin-loader" version "1.0.0"
+    id "com.android.application" version "8.7.3" apply false
+    id "com.android.library" version "8.7.3" apply false
+    id "org.jetbrains.kotlin.android" version "2.1.0" apply false
+}
+
+include ":app"
+project(":app").projectDir = file("app")
+
+include ":torrentengine"
+project(":torrentengine").projectDir = file("torrentengine")