Kapt: Add option for showing annotation processor timings (KT-28024)

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/internal/kapt/Kapt3KotlinGradleSubplugin.kt

@@ -343,6 +343,7 @@ class Kapt3KotlinGradleSubplugin : KotlinGradleSubplugin<KotlinCompile> {
         pluginOptions += SubpluginOption("correctErrorTypes", "${kaptExtension.correctErrorTypes}")
         pluginOptions += SubpluginOption("mapDiagnosticLocations", "${kaptExtension.mapDiagnosticLocations}")
         pluginOptions += SubpluginOption("strictMode", "${kaptExtension.strictMode}")
+        pluginOptions += SubpluginOption("showProcessorTimings", "${kaptExtension.showProcessorTimings}")
         pluginOptions += SubpluginOption("detectMemoryLeaks", kaptExtension.detectMemoryLeaks)
         pluginOptions += SubpluginOption("infoAsWarnings", "${project.isInfoAsWarnings()}")
         pluginOptions += FilesSubpluginOption("stubs", listOf(getKaptStubsDir()))

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/KaptExtension.kt

@@ -32,6 +32,8 @@ open class KaptExtension {
     open var mapDiagnosticLocations: Boolean = false
 
     open var strictMode: Boolean = false
+    
+    open var showProcessorTimings: Boolean = false
 
     open var detectMemoryLeaks: String = "default"