move postfix templates to java-impl

java/java-tests/testData/codeInsight/template/postfix/templates/cast/singleExpression.java

@@ -0,0 +1,5 @@
+public class Foo {
+    void m(Object o) {
+        o.cast<caret>
+    }
+}

java/java-tests/testData/codeInsight/template/postfix/templates/cast/singleExpression_after.java

@@ -0,0 +1,5 @@
+public class Foo {
+    void m(Object o) {
+        (() o)<caret>
+    }
+}

java/java-tests/testData/codeInsight/template/postfix/templates/cast/voidExpression.java

@@ -0,0 +1,7 @@
+public class Foo {
+    void m(Object o) {
+        bar().cast<caret>
+    }
+  
+    void bar() {}
+}

java/java-tests/testData/codeInsight/template/postfix/templates/cast/voidExpression_after.java

@@ -0,0 +1,7 @@
+public class Foo {
+    void m(Object o) {
+        bar().cast  <caret>
+    }
+  
+    void bar() {}
+}