fix: handle all values for buffers in turbocall codegen

[devsnek]

Now that ArrayBuffer/ArrayBufferView is a generic Value type, we have to handle it being passed any value. To do this, thread FastApiCallbackOptions through the function, and add error raising logic.

If we run conversion and the value is not valid, we return isize::MAX, and then in cranelift we use this value to know that we should branch to the error logic.

An example compilation looks like this:

extern "C" fn print_buffer(ptr: *const u8, len: usize);

function %print_buffer_wrapper(i64, i64, i64, i64) system_v {
    sig0 = (i64, i64) system_v
    sig1 = (i64) -> i64 system_v
    sig2 = (i64) system_v

block0(v0: i64, v1: i64, v2: i64, v3: i64):
    v4 = iconst.i64 0x6525_9198_2d00 ; turbocall_ab_contents
    v5 = call_indirect sig1, v4(v1)
    v6 = iconst.i64 0x7fff_ffff_ffff_ffff
    v7 = icmp eq v5, v6
    brif v7, block1, block2

block2:
    v8 = iconst.i64 0x7558_4c0c_0700 ; sym.ptr
    call_indirect sig0, v8(v5, v2)
    return

block1 cold:
    v9 = iconst.i64 0x6525_9198_2d70 ; turbocall_raise
    call_indirect sig2, v9(v3)
    return
}

Also cleaned up all the unwraps and added some logging.

[littledivy]

LGTM

Not for this PR but it would be nice to have codegen tests like we did before, maybe just the IR.