Enhance truncate & smoltcp_impl (Nagle/MSS/Capacity); Request axfs_crates Release

[SiyuanSun0736]

I've extended the file size support for truncate and added several new interfaces to smoltcp_impl, including: nagle_enabled,set_nagle_enabled, get_remote_mss,recv_capacity,send_capacity

I'd like to request a new release for axfs_crates. I will modify modules/axfs/src/mounts.rs and Cargo.lock and submit again.

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I'd like to request a new release for axfs_crates. I will modify modules/axfs/src/mounts.rs and Cargo.lock and submit again.

How are you going to modify axfs_crates? You can submit a PR for it first.

[SiyuanSun0736]

I'd like to request a new release for axfs_crates. I will modify modules/axfs/src/mounts.rs and Cargo.lock and submit again.

How are you going to modify axfs_crates? You can submit a PR for it first.

arceos-org/axfs_crates#2

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You cloud use git = xxx in Cargo.toml temporarily.

[SiyuanSun0736]

Testing urandom in arceos

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Please split this PR into two unrelated parts, one for axnet changes (do not require updating axfs_crates dependencies) and one for axfs changes.