Update UAST to 1.0.10; move uast-kotlin tests to Kotlin project

plugins/uast-kotlin/testData/Simple.render.txt

@@ -0,0 +1,8 @@
+public final class Simple {
+    private final var property: java.lang.String = "Mary"
+    public final fun method() : void {
+        println("Hello, world!")
+    }
+    public final fun getProperty() : java.lang.String = UastEmptyExpression
+    public fun Simple() = UastEmptyExpression
+}