feat: mp_rowhash macro and fixed failing tests

tests/base/mf_getfmtlist.test.sas

@@ -5,9 +5,14 @@
   <h4> SAS Macros </h4>
   @li mf_getfmtlist.sas
   @li mp_assert.sas
+  @li mp_assertscope.sas
 
 **/
 
+%mp_assertscope(SNAPSHOT)
+%put %mf_getfmtlist(sashelp.prdsale);
+%mp_assertscope(COMPARE)
+
 %mp_assert(
   iftrue=(
     "%mf_getfmtlist(sashelp.prdsale)"="DOLLAR $CHAR W MONNAME"
@@ -23,11 +28,3 @@
   desc=Checking basic char,
   outds=work.test_results
 )
-
-%mp_assert(
-  iftrue=(
-    "%mf_getfmtlist(sashelp.demographics)"="BEST Z $CHAR COMMA PERCENTN"
-  ),
-  desc=Checking longer numeric,
-  outds=work.test_results
-)