Added typeName function to PgObject as it might be useful for building generic functions.

pglablib/catalog/PgProc.cpp

@@ -370,3 +370,17 @@ QString PgProc::volatility() const
 	}
 	return "<unknown>";
 }
+
+QString PgProc::typeName() const
+{
+	switch (kind) {
+	case ProcKind::Function:
+	case ProcKind::Window:
+		return "FUNCTION";
+	case ProcKind::Procedure:
+		return "PROCEDURE";
+	case ProcKind::Aggregate:
+		return "AGGREGATE";
+	}
+	throw std::runtime_error("Unexpected kind in PgProc::typeName()");
+}