Prepared statement

[laysakura]

Is your feature request related to a problem? Please describe.

Without prepared statement, users are more likely to affected by SQL injection.

Describe the solution you'd like

Providing prepared statement by the following APIs (e.g. low-level APIs).

• stmt = spring_prepare(&pipeline);
• `spring_execute(&stmt, [param1, param2]);
• (deprecates?) spring_command();

Describe alternatives you've considered

Additional context

When 2 car models have the same application, the app in two models can only differ in parameter values.
SpringQL can help such usecases by accepting parameter values from applications.