Create AndroidComposeConventionPlugin.kt

Change-Id: I20da77ff85c1d913a84b9b18711080381ba36722

build-logic/convention/src/main/kotlin/AndroidComposeConventionPlugin.kt

@@ -0,0 +1,38 @@
+import com.android.build.api.dsl.ApplicationExtension
+import com.android.build.api.dsl.CommonExtension
+import com.android.build.api.dsl.LibraryExtension
+import com.google.samples.apps.nowinandroid.configureAndroidCompose
+import org.gradle.api.Plugin
+import org.gradle.api.Project
+import org.gradle.kotlin.dsl.apply
+import org.gradle.kotlin.dsl.the
+
+/*
+ * Copyright 2025 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+class AndroidComposeConventionPlugin : Plugin<Project> {
+    override fun apply(target: Project) {
+        with(target) {
+            apply(plugin = "org.jetbrains.kotlin.plugin.compose")
+            val extension: CommonExtension<*, *, *, *, *, *> = when {
+                pluginManager.hasPlugin("com.android.application") -> the<ApplicationExtension>()
+                pluginManager.hasPlugin("com.android.library") -> the<LibraryExtension>()
+                else -> TODO("This plugin is dependent on either nowinandroid.android.application or nowinandroid.android.library. Apply one of those plugins first.")
+            }
+            configureAndroidCompose(extension)
+        }
+    }
+}