CLI: Change kotlin reflection to java reflection

The command line argument parser is using between 0.25s and 0.5s
(depending on platform) on finding annotated properties. This fix
replaces the slow kotlin reflection with java reflection, which is an
order of magnitude faster.

 #KT-58183 Fixed

generators/tests/org/jetbrains/kotlin/generators/arguments/GenerateGradleOptions.kt

@@ -16,17 +16,18 @@ import kotlin.reflect.KClass
 import kotlin.reflect.KProperty1
 import kotlin.reflect.full.declaredMemberProperties
 import kotlin.reflect.full.withNullability
+import kotlin.reflect.jvm.javaField
 
-// Additional properties that should be included in interface
+// Additional properties that should be included
 @Suppress("unused")
-interface AdditionalGradleProperties {
+private class AdditionalGradleProperties {
     @GradleOption(
         value = DefaultValue.EMPTY_STRING_LIST_DEFAULT,
         gradleInputType = GradleInputTypes.INPUT,
         shouldGenerateDeprecatedKotlinOptions = true,
     )
     @Argument(value = "", description = "A list of additional compiler arguments")
-    var freeCompilerArgs: List<String>
+    var freeCompilerArgs = listOf<String>()
 }
 
 private data class GeneratedOptions(
@@ -869,7 +870,7 @@ private fun Printer.generateOptionDeprecation(property: KProperty1<*, *>) {
 }
 
 private fun Printer.generateDoc(property: KProperty1<*, *>) {
-    val description = property.findAnnotation<Argument>()!!.description
+    val description = property.javaField!!.getAnnotation(Argument::class.java).description
     val possibleValues = property.gradleValues.possibleValues
     val defaultValue = property.gradleValues.defaultValue
 
@@ -896,7 +897,7 @@ private fun generateMarkdown(properties: List<KProperty1<*, *>>) {
         if (name == "includeRuntime") continue   // This option has no effect in Gradle builds
         val renderName = listOfNotNull("`$name`", property.findAnnotation<GradleDeprecatedOption>()?.let { "__(Deprecated)__" })
             .joinToString(" ")
-        val description = property.findAnnotation<Argument>()!!.description
+        val description = property.javaField!!.getAnnotation(Argument::class.java).description
         val possibleValues = property.gradleValues.possibleValues
         val defaultValue = when (property.gradleDefaultValue) {
             "null" -> ""