refactor: Address performance

Very minor pre-allocation change

Author: JDOsborne1

pkg/core/restrictions_test.go

@@ -95,15 +95,15 @@ var example_schema = Schema{
 }
 
 func get_table_names(_input Schema) []string {
-	var output []string
+	output := []string{}
 	for _, table := range _input.Tables {
 		output = append(output, table.Name)
 	}
 	return output
 }
 
 func get_column_names(_input Table) []string {
-	var output []string
+	output := []string{}
 	for _, column := range _input.Columns {
 		output = append(output, column.Name)
 	}