container: root: rewrite throw handler, refactor using common types

- Refactor using common types that were once internal
- Removes ancient macro approaches to C++20 solutions
- Changes `Exception` message type to use std::string
  * std::string_view isn't worthwhile in this context

container/src/root/macro/web/internal/meta.C

@@ -184,7 +184,7 @@ class Meta final
   //! \param column Existing CSV metadata column
   static void meta_sample(const std::string& column)
   {
-    namespace common = ::dfi::macro::common;
+    namespace common = ::dfi::common;
 
     // Import meta file
     const std::string path{common::get_env("global_conf_meta")};
@@ -197,14 +197,12 @@ class Meta final
       available += "\n\t" + col;
     available += "\n";
 
-    if (!csv->HasColumn(column))
-      throw std::runtime_error(
-          std::string{"\n\nAvailable columns: " + available}.c_str());
+    common::throw_ex_if<common::type::RuntimeError>(
+        !csv->HasColumn(column), "\n\nAvailable columns: " + available);
 
     // Aggregate all rows of given column
     auto count = csv->Count();
-    if (!*count)
-      throw std::runtime_error("Empty CSV");
+    common::throw_ex_if<common::type::RuntimeError>(!*count, "Empty CSV");
 
     // Prepare canvas data
     Meta::CanvasData data;