chore(rust): add low latency example #30925

Job	Run time
Rust - lint_cargo_readme	1m 7s
Rust - build	3m 47s
Rust - lint_cargo_fmt_check	57s
Rust - build_docs	2m 1s
Rust - ockam_command_cross_build (linux_armv7)	12m 47s
Rust - lint_cargo_clippy	3m 31s
Rust - ockam_command_cross_build (macos_silicon)	9m 28s
Rust - build_examples	3m 45s
Rust - check_cargo_update	3m 49s
Rust - lint_cargo_deny	1m 9s
Rust - ockam_command_cross_build (linux_aarch64_gnu, ubuntu-22.04, stable, aarch64-unknown-linux-...	12m 44s
Rust - build_nightly	4m 25s
Rust - check_no_std	2m 37s
Rust - lint_cargo_toml_files	52s
Rust - check_nightly	3m 10s
Rust - build_release	9m 19s
Rust - lint_cargo_machete	1m 8s
Rust - test	17m 10s
Rust - test_nightly	18m 45s
Rust - test_postgres	7m 40s
Rust - test_ockam_command (linux_86)	8m 10s
	2h 8m 21s

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