feat(op, fs): :sparkles: Intergated `statx` into monoio

[Lzzzzzt]

Add statx support for monoio

Add Statx<T> struct to support Op, just implement for SharedFd and CString to support different use cases.

So there are two types: FdStatx and PathStatx, both of them are implement OpAble Trait.

Currently, they can work on linux with iouring and legacy feature, and not support macos and windows, due to these two platforms don't have the statx syscall, it may use the stat syscall and transform the result to the statx

Also, to test the Statx<T> work correctly, I add some new struct to fs module like Metadata, Permissions and FileType.

There is another reason to add these struct, I can't transform the statx struct to the Metadata and other types in std::fs.

So these struct provide nearly the same API like std::fs's

I also add some basic test in tests dir.

Currently, all these changes above only work on linux

[CLAassistant]

All committers have signed the CLA.

[Lzzzzzt]

267

[ihciah]

It seems test failed for i686 and aarch64...

[Lzzzzzt]

the problem in aarch64 may fixed, but the i686's i don't know why this would happen, maybe disable the statx in i686?

[Lzzzzzt]

the error happen due to the cross's bug, i have test in newest cross version, it works fine.

[Lzzzzzt]

and the run.sh is

#!/bin/bash

# Define the list of architectures to test
architectures=(
    "x86_64-unknown-linux-gnu"
    "i686-unknown-linux-gnu"
    "aarch64-unknown-linux-gnu"
    "armv7-unknown-linux-gnueabihf"
    "riscv64gc-unknown-linux-gnu"
    "s390x-unknown-linux-gnu"

    "x86_64-apple-darwin"
    "aarch64-apple-darwin"
)

# Loop through each architecture and run the tests
for arch in "${architectures[@]}"; do

    cross test --lib --bins --tests --target "$arch" --no-default-features --features "async-cancel,bytes,legacy,macros,utils" > /dev/null 2>&1

    if [ $? -eq 0 ]; then
        echo "Success for $arch"
    else
        echo "Failure for $arch"
    fi
done

the failure of riscv is #1423