rust-defaults package in openKylin

cargo: Rust package manager
cargo-doc: Rust package manager, documentation
libstd-rust-dev: Rust standard libraries - development files
rust-all: Rust systems programming language - all developer tools
rust-clippy: Rust linter
rust-doc: Rust systems programming language - Documentation
rust-gdb: Rust debugger (gdb)
rust-lldb: Rust debugger (lldb)
rust-src: Rust systems programming language - source code
rustc: Rust systems programming language
rustfmt: Rust formatting helper