Merge branch 'master' into c-style-docs

.cargo/config.toml

.github/workflows/aarch64.yml

.github/workflows/doc.yml

.gitignore

.gitlab-ci.yml

Cargo.toml

README.md

src/arch/aarch64/kernel/mod.rs

src/arch/aarch64/kernel/scheduler.rs

src/arch/aarch64/kernel/systemtime.rs

src/arch/aarch64/mm/physicalmem.rs

src/arch/x86_64/kernel/apic.rs

src/arch/x86_64/kernel/mod.rs

src/arch/x86_64/kernel/processor.rs

src/arch/x86_64/kernel/scheduler.rs

src/arch/x86_64/kernel/serial.rs

src/arch/x86_64/kernel/systemtime.rs

src/arch/x86_64/mm/paging.rs

src/env.rs

src/environment.rs