move postfix templates to java-impl

java/java-tests/testData/codeInsight/template/postfix/templates/field/foo.java

@@ -0,0 +1,5 @@
+public class Foo {
+    public void bar(Foo arg) {
+        arg.field<caret>
+    }
+}

java/java-tests/testData/codeInsight/template/postfix/templates/field/foo_after.java

@@ -0,0 +1,7 @@
+public class Foo {
+    private Foo foo;
+
+    public void bar(Foo arg) {
+        foo = arg;<caret>
+    }
+}

java/java-tests/testData/codeInsight/template/postfix/templates/field/simple.java

@@ -0,0 +1,5 @@
+public class Foo {
+  public Foo(int arg) {
+    arg.field<caret>
+  }
+}

java/java-tests/testData/codeInsight/template/postfix/templates/field/simple_after.java

@@ -0,0 +1,7 @@
+public class Foo {
+    private int foo;
+
+    public Foo(int arg) {
+        foo = arg;<caret>
+    }
+}