refactor(lib): make Rust module compile-able under stable Rust

[dndx]

Implementation based on the Rust standard library implementation for vec_into_raw_parts.

See examples from: https://doc.rust-lang.org/src/alloc/vec/mod.rs.html#538-546
Implementation in: https://doc.rust-lang.org/src/alloc/vec/mod.rs.html#818-822

With this change the Rust library now compiles cleanly with stable Rust 1.71.1.

This makes building under a production setup easier as Rust nightly can not be easily pinned and might introduce breaking changes without notice.

Helps unblock: #392

[dndx]

cc @fffonion

[coveralls]

Pull Request Test Coverage Report for Build 5941536595

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 91.123%

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Totals
Change from base Build 5910032552:	0.0%
Covered Lines:	7586
Relevant Lines:	8325

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💛 - Coveralls