Fix clippy.sh script and fix a number of clippy warnings

Cargo.lock

Cargo.toml

clippy.sh

src/acpi/dmar/mod.rs

src/acpi/madt.rs

src/acpi/rsdt.rs

src/acpi/xsdt.rs

src/allocator/linked_list.rs

src/arch/x86_64/device/cpu.rs

src/arch/x86_64/gdt.rs

src/arch/x86_64/graphical_debug/display.rs

src/arch/x86_64/paging/mapper.rs

src/arch/x86_64/paging/mod.rs

src/arch/x86_64/paging/table.rs

src/arch/x86_64/paging/temporary_page.rs

src/common/unique.rs

src/context/arch/x86_64.rs

src/context/context.rs

src/context/list.rs

src/context/memory.rs