[DMA 6/8] More helper types & working split

[bugadani]

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Submission Checklist 📝

• I have updated existing examples or added new ones (if applicable).
• I have used cargo xtask fmt-packages command to ensure that all changed code is formatted correctly.
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Pull Request Details 📖

Description

Closes #2401
Closes #1767

[bugadani]

I'm open to suggestions for the naming. I'm aware that type erasure hurts us a bit on 32 and S2. I am planning to use different erased types on the P4 so we won't have runtime checks there.

[Dominaezzz]

This also closes #1767

[bugadani]

I'm a bit unsure whether this amount of documentation is too little, enough or too much, but I guess it's time to collect feedback.

[Dominaezzz]

Haven't read the doc yet, just one comment

[Dominaezzz]

LGTM

I'll leave it you to decide when to add split() to the migration guide.

[bugadani]

I'll leave it you to decide when to add split() to the migration guide.

Thanks, forgot to add it

[MabezDev]

Thanks!