Add no_panic attribute for FromPrimitive

[BrainStackOverFlow]

Added a new attribute: #[num_enum(from_primitive(no_panic))], with alternative syntax of #[num_enum(from_primitive(no_panic=true))].
this configuration is off by default.

this configuration generates a #[no_panic::no_panic] attribute on the (from this crate https://docs.rs/no-panic/latest/no_panic/) from_primitive() methods generated by #[derive(FromPrimitive)]

I made A POC that's works on my machine with manual tests.

If you are willing to accept such feature, I will add the necessary tests & docs.
I am open to make changes according to feedback.

example code from my project:

#[derive(Debug, IntoPrimitive, FromPrimitive)]
#[num_enum(from_primitive(no_panic))]
#[repr(isize)]
#[non_exhaustive]
pub enum Errno {
    EPERM = EPERM,
    ENOENT = ENOENT,
    // many more variants ...
    EHWPOISON = EHWPOISON,
    #[num_enum(catch_all)]
    Unknown(isize),
}

#[no_panic::no_panic]
pub unsafe fn syscall6w(
    no: isize,
    arg0: isize,
    arg1: isize,
    arg2: isize,
    arg3: isize,
    arg4: isize,
    arg5: isize,
) -> Result<isize, SyscallError> {
    let result = syscall6(no, arg0, arg1, arg2, arg3, arg4, arg5);

    if result as usize > -4096isize as usize {
        Err(SyscallError(no, Errno::from_primitive(-result)))
    } else {
        Ok(result)
    }
}