Simplify use of enums

[Traxar]

It would be very nice for zig-sqlite to deal with converting enums to ints and back on its own. Having to write this at call site causes unnecessary boilerplate. As seen in this example:

try select.bind(.{
        .id = filter.id,
        .name = filter.name,
        .status = @enumToInt(filter.status),
    });

instead of just being able to:

try select.bind(filter);

[joeltg]

I'm not opposed to adding this but I would want to avoid using @enumFromInt so that parsing an invalid value doesn't invoke undefined behavior.

I'll keep this open as a note to myself for the next time I make some changes.