Rust Alignment

[CasperN]

The Rust Flatbuffers library currently relies on Rust's notion of alignment, which is platform dependent. We should audit/remove all use of align_of::<T>() and use our own trait for flatbuffers types.

Note that since &[u8] is alignment 1 in Rust, our generated Rust code doesn't assume things are aligned, but we may create unaligned buffers that will be read on other languages/platforms

Discovered in #7015
Blocking #7103

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This issue is stale because it has been open 6 months with no activity. Please comment or label not-stale, or this will be closed in 14 days.

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This issue was automatically closed due to no activity for 6 months plus the 14 day notice period.