Modernize gradle scripts, migrate to TOML version catalog

build.gradle.kts

@@ -1,35 +1,10 @@
-// Top-level build file where you can add configuration options common to all sub-projects/modules.
 plugins {
-    kotlin("plugin.serialization") version libs.versions.kotlin apply false
-    id("org.jetbrains.kotlin.android") version libs.versions.kotlin apply false
-    id("com.google.devtools.ksp") version "1.9.0-1.0.13" apply false
-    id("com.google.protobuf") version "0.9.4" apply false
-}
-
-buildscript {
-    repositories {
-        google()
-        mavenCentral()
-    }
-    dependencies {
-        classpath("com.android.tools.build:gradle:8.1.2")
-        classpath(libs.kotlin.gradle)
-        // NOTE: Do not place your application dependencies here; they belong
-        // in the individual module build.gradle files
-    }
-}
-
-allprojects {
-    repositories {
-        google()
-        mavenCentral()
-        maven(url = "https://pkgs.dev.azure.com/MicrosoftDeviceSDK/DuoSDK-Public/_packaging/Duo-SDK-Feed/maven/v1")
-        jcenter() // For tinypinyin
-    }
-}
-
-tasks.create<Delete>("clean") {
-    delete(rootProject.buildDir)
+    alias(libs.plugins.kotlin.android) apply false
+    alias(libs.plugins.kotlin.plugin.serialization) apply false
+    alias(libs.plugins.ksp) apply false
+    alias(libs.plugins.protobuf) apply false
+    alias(libs.plugins.android.application) apply false
+    alias(libs.plugins.android.library) apply false
 }
 
 apply(from = "docs/deps-graph.gradle")