feat: creating new mx_ suite of macros!

also adding new mx_getcode macro

tests/base/mp_assertcolvals.test.sas

@@ -0,0 +1,32 @@
+/**
+  @file
+  @brief Testing mp_assertcolvals macro
+
+  <h4> SAS Macros </h4>
+  @li mp_assertcolvals.sas
+
+**/
+
+
+data work.checkds;
+  do checkval='Jane','James','Jill';
+    output;
+  end;
+run;
+%mp_assertcolvals(sashelp.class.name,
+  checkvals=work.checkds.checkval,
+  desc=At least one value has a match,
+  test=ANYVAL
+)
+
+data work.check;
+  do val='M','F';
+    output;
+  end;
+run;
+%mp_assertcolvals(sashelp.class.sex,
+  checkvals=work.check.val,
+  desc=All values have a match,
+  test=ALLVALS
+)
+