Rust

Update root `README.md` adding example how to use ... #145

Job	Run time
Build Libraries on AMD64 Rust stable	13m 47s
Test on windows-latest Rust stable	7m 26s
Lint	17s
Test on macos-latest Rust stable	3m 5s
Test Ballista on AMD64 Rust stable	5m 3s
Clippy (amd64, stable)	3m 2s
Test Workspace on AMD64 Rust stable	9m 38s
Check Cargo.toml formatting (amd64, stable)	1m 34s
verify benchmark results (amd64) (amd64, stable)	9m 39s
Docker	13s
	53m 44s

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