Fix MatX when building MRC and Morpheus in same environment. (#55)

For unknown reasons, when building MRC and Morpheus within the same conda environment, MatX fails to see some c printf macros. Adding `__STDC_FORMAT_MACROS` fixes the issue, though I'm curious as to why this wasn't a problem before. @mdemoret-nv, is there a better way to fix this?

Contributes to nv-morpheus/Morpheus#704

Authors:
  - Christopher Harris (https://github.com/cwharris)

Approvers:
  - Michael Demoret (https://github.com/mdemoret-nv)

URL: #55

cmake/morpheus_utils/package_config/matx/Configure_matx.cmake

@@ -46,6 +46,11 @@ function(morpheus_utils_configure_matx)
       "MATX_INSTALL ON"
     )
 
+    # Explicitly set this compiletime definition because it is not implicitly set when building MRC
+    # and Morphues in the same conda environment For more details, see this github pr...
+    # https://github.com/nv-morpheus/utilities/pull/55
+    target_compile_definitions(matx INTERFACE __STDC_FORMAT_MACROS)
+
   else()
     message(SEND_ERROR
       "Unable to add MatX dependency. CUDA Version must be greater than 11.5.