feat: creating new mx_ suite of macros!

also adding new mx_getcode macro

tests/base/mp_coretable.test.sas

@@ -0,0 +1,31 @@
+/**
+  @file
+  @brief Testing mp_coretable.sas macro
+
+  <h4> SAS Macros </h4>
+  @li mf_existds.sas
+  @li mp_coretable.sas
+  @li mp_assert.sas
+
+**/
+
+
+%mp_coretable(LOCKTABLE,libds=work.lock)
+%mp_assert(
+  iftrue=(%mf_existds(work.lock)=1),
+  desc=Lock table created,
+  outds=work.test_results
+)
+%mp_coretable(LOCKTABLE)
+%mp_assert(
+  iftrue=("&syscc"="0"),
+  desc=DDL export ran without errors,
+  outds=work.test_results
+)
+
+%mp_coretable(FILTER_SUMMARY,libds=work.sum)
+%mp_assert(
+  iftrue=(%mf_existds(work.sum)=1),
+  desc=Filter summary table created,
+  outds=work.test_results
+)