Add new test for mirroring with nested states

[uturuncoglu]

This PR aims to add new NUOPC application prototype to test new mirroring option transferAllAsNests.

[uturuncoglu]

@theurich I add a new simple prototype app for testing new option for mirroring. In this case, ocean component sends sst and atmosphere model extracts the nested state to reach the field provided by ocean component. I used existing miroring test in here but I remove lots of things from it to make it simple and understandable.

[uturuncoglu]

@theurich this works without any issue in one processor but it seems handing if I use multiple. I could not understand way but if you have any idea or seeing anything missing just let me know. I'll also try to fix it.

[uturuncoglu]

@theurich Okay. It is working if I comment following lines from the esm.F90.

diff --git a/AtmOcnMirrorFieldsNestedProto/esm.F90 b/AtmOcnMirrorFieldsNestedProto/esm.F90
index a1270d3..0123295 100644
--- a/AtmOcnMirrorFieldsNestedProto/esm.F90
+++ b/AtmOcnMirrorFieldsNestedProto/esm.F90
@@ -9,8 +9,8 @@
 !==============================================================================
 
 ! For testing with threading keep one or both SETVM macros active
-#define WITH_ATM_SETVM
-#define WITH_OCN_SETVM
+!#define WITH_ATM_SETVM
+!#define WITH_OCN_SETVM
 
 ! For testing with partially overlapping components keep one active, other _off
 #define WITH_ATM_PETLIST_off

I am not sure this part is necessary. Do we want to also test this with threading. Since editing mirroring test is testing threading maybe it would be nice to see this simple. Anyway, let me know what you think.