Settings loader, pass error messages to exception raise

So we can get the actual error message in the exception if logging is all off

test-run/config_handling/config/settings.ini

@@ -37,3 +37,6 @@ email_bad=gii@bar.com
 [LoadTest]
 a.b.c=foo
 d:e:f=bar
+
+[ErrorTest]
+some_value=42

test-run/config_handling/settings_loader.py

@@ -125,6 +125,20 @@ def main():
     except ValueError as e:
         print(f"Could not load settings: {e}")
 
+    try:
+        config_load = 'ErrorTest'
+        config_data = sl.load_settings(
+            config_load,
+            {
+                "some_value": [
+                    "check:string.email.basic",
+                ],
+            }
+        )
+        print(f"[{config_load}] Load: {config_load} -> {dump_data(config_data)}")
+    except ValueError as e:
+        print(f"Could not load settings: {e}")
+
 
 if __name__ == "__main__":
     main()