java: handle { after if/while statement condition and insert new block statement if needed

java/java-tests/testData/codeInsight/typing/fixIfByBrace_after.java

@@ -0,0 +1,7 @@
+class C {
+  boolean f() {
+      if (f()) {
+          <caret>
+      }
+  }
+}

java/java-tests/testData/codeInsight/typing/fixIfByBrace_before.java

@@ -0,0 +1,5 @@
+class C {
+  boolean f() {
+    if (f()<caret>)
+  }
+}

java/java-tests/testData/codeInsight/typing/fixWhileByBrace_after.java

@@ -0,0 +1,7 @@
+class C {
+  boolean f() {
+      while (f()) {
+          <caret>
+      }
+  }
+}

java/java-tests/testData/codeInsight/typing/fixWhileByBrace_before.java

@@ -0,0 +1,5 @@
+class C {
+  boolean f() {
+    while (f()<caret>)
+  }
+}