Create FUS Gradle plugin

fus-statistics-gradle-plugin can be used by any other Gradle plugins to
collect additional metrics for FUS.

KT-59627

repo/codebase-tests/tests/org/jetbrains/kotlin/code/CodeConformanceTest.kt

@@ -117,6 +117,7 @@ class CodeConformanceTest : TestCase() {
                 "libraries/tools/gradle/android-test-fixes/build",
                 "libraries/tools/gradle/gradle-warnings-detector/build",
                 "libraries/tools/gradle/kotlin-compiler-args-properties/build",
+                "libraries/tools/gradle/fus-statistics-gradle-plugin/build",
                 "libraries/tools/kotlin-allopen/build",
                 "libraries/tools/kotlin-assignment/build",
                 "libraries/tools/kotlin-gradle-build-metrics/build",