Simplify dependencies

[vsylva]

Removed the "widestring" dependency

Test passed

    // Ok
    // let process = hudhook::inject::Process::by_name("re8.exe").unwrap();

    // Ok
    // let process = hudhook::inject::Process::by_name("re8.exe\0 I don't care about this stuff").unwrap();

    // Ok
    // let process = hudhook::inject::Process::by_title("Resident Evil Village").unwrap();

    // Ok
    let process =
        hudhook::inject::Process::by_title("Resident Evil Village\0 I don't care about this stuff")
            .unwrap();

    // Ok
    process.inject("d3d11.dll".into()).unwrap();

[veeenu]

Thank you for this! I need a bit of time for a proper review but pruning dependencies in this way is absolutely great.