Add basic MS verifier

Author: tikk3r

utility/verify_ms.sh

@@ -0,0 +1,5 @@
+MS=$1
+RESULT=$(python -c "import casacore.tables as ct; ct.table(\"$MS\")" 2>/dev/null)
+if ! grep -q "Successful readonly open" <<< "$RESULT"; then
+    echo "$MS is NOT a valid MeasurementSet."
+fi