feat: creating new mx_ suite of macros!

also adding new mx_getcode macro

tests/base/mp_ds2fmtds.test.sas

@@ -0,0 +1,30 @@
+/**
+  @file
+  @brief Testing mp_ds2fmtds.sas macro
+
+  <h4> SAS Macros </h4>
+  @li mp_ds2fmtds.sas
+  @li mp_assert.sas
+
+**/
+
+proc sql;
+create table test as select * from dictionary.tables where libname='SASHELP';
+
+filename inc temp;
+data _null_;
+  set work.test;
+  file inc;
+  libds=cats('sashelp.',memname);
+  if exist(libds) then line=cats('%mp_ds2fmtds(',libds,',',memname,')');
+  put line;
+run;
+
+options obs=50;
+%inc inc;
+
+%mp_assert(
+  iftrue=(&syscc=0),
+  desc=Checking tables were created successfully,
+  outds=work.test_results
+)