Setup spacing rules for anonymous initializers

idea/testData/formatter/AnonymousInitializers.kt

@@ -0,0 +1,41 @@
+annotation class Ann
+class A {
+    {}{}{}
+    fun foo1()  {
+
+    }
+    val x: Int = 1
+    init{}
+    fun foo2() {
+
+    }
+    Ann    init       {}
+    Ann    init {}
+
+
+    fun foo3() {
+
+    }
+
+
+    {}
+
+    constructor() {
+
+    }
+
+
+
+    /* abcde */init {
+
+    }
+
+    fun foo4() {
+
+    }
+
+    val a3 = foo4() // el
+    /* abc */ init {
+
+    }
+}