[Gradle] Implement kotlin-gradle-plugin-annotations module

This will include Internal* and *Experimental annotations for the
Kotlin Gradle Plugin. The separate module is proposed, so that
additional modules can use those annotations without
a dependency to the full kotlin-gradle-plugin-api module
(see -idea modules)

^KT-54029 WIP

libraries/tools/kotlin-gradle-plugin-annotations/build.gradle.kts

@@ -0,0 +1,12 @@
+plugins {
+    kotlin("jvm")
+}
+
+configureKotlinCompileTasksGradleCompatibility()
+
+publish()
+standardPublicJars()
+
+dependencies {
+    compileOnly(kotlinStdlib())
+}