Rust

Use the home and windows-sys crates to get the storage dir #118

Job	Run time
android	41s
Check wasm32 + wasm-bindgen	2m 29s
Format + check + test	5m 59s
cargo-deny aarch64-apple-darwin	40s
ios	32s
Check Windows	1m 36s
cargo-deny aarch64-linux-android	43s
cargo-deny i686-pc-windows-gnu	43s
cargo-deny i686-pc-windows-msvc	40s
cargo-deny i686-unknown-linux-gnu	41s
cargo-deny wasm32-unknown-unknown	44s
cargo-deny x86_64-apple-darwin	39s
cargo-deny x86_64-pc-windows-gnu	39s
cargo-deny x86_64-pc-windows-msvc	39s
cargo-deny x86_64-unknown-linux-gnu	44s
cargo-deny x86_64-unknown-linux-musl	43s
cargo-deny x86_64-unknown-redox	38s
	19m 30s

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