Fix vec string warnings

[hackaugusto]

This builds on #248

It changes the explicit import by a wildcard. The explicit imports raised warnings:

error: the item `String` is imported redundantly
   --> utils/core/src/serde/byte_reader.rs:6:51
    |
6   | use super::{Deserializable, DeserializationError, String, Vec};
    |                                                   ^^^^^^
    |
   ::: /Users/hack/.rustup/toolchains/nightly-aarch64-apple-darwin/lib/rustlib/src/rust/library/std/src/prelude/mod.rs:125:13
    |
125 |     pub use super::v1::*;
    |             --------- the item `String` is already defined here
    |
    = note: `-D unused-imports` implied by `-D warnings`
    = help: to override `-D warnings` add `#[allow(unused_imports)]`

[hackaugusto]

Note: I fixed the warnings raised by the CI. But it seems the CI is only running clippy with the default feature flags:

cargo clippy --all -- -D clippy::all -D warnings

When running it with:

cargo clippy --workspace --all-targets --all-features -- -D clippy::all -D warnings

There is additional errors. The CI and the above errors should probably be fixed in another PR.

[irakliyk]

Closing this as these changes were also included in #250.