refactor(rust): enable requests to be messages #31841

Job	Run time
Rust - check_cargo_update	3m 6s
Rust - check_no_std	2m 17s
Rust - build	2m 51s
Rust - lint_cargo_readme	1m 16s
Rust - check_nightly	2m 40s
Rust - build_docs	2m 33s
Rust - ockam_command_cross_build (linux_armv7)	12m 20s
Rust - lint_cargo_fmt_check	1m 19s
Rust - lint_cargo_clippy	3m 21s
Rust - ockam_command_cross_build (macos_silicon)	8m 59s
Rust - build_examples	3m 11s
Rust - lint_cargo_deny	1m 24s
Rust - build_nightly	4m 2s
Rust - test	15m 45s
Rust - lint_cargo_toml_files	1m 14s
Rust - ockam_command_cross_build (linux_aarch64_gnu, ubuntu-22.04, stable, aarch64-unknown-linux-...	12m 14s
Rust - build_release	7m 9s
Rust - test_nightly	15m 49s
Rust - lint_cargo_machete	1m 21s
Rust - test_ockam_command (linux_86)	9m 33s
Rust - test_postgres	6m 56s
	1h 59m 20s

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