WhereDbModel hardcoded <'s>

[amigin]

For time-saving - <'s> is hardcoded when we use lifetime as a part of the WhereDbModel structure.

pub struct MyWhereStruct<'s>{
/// fields
}

Improvement to be made - is that 's is not hardcoded - but is read from the struct lifetime.

For now, <'s> must be used if the structure has a lifetime or the code would not compile.

This code would not compile

pub struct MyWhereStruct<'d>{
/// fields
}