Add DivRem with DivisionRounding (WIP + Review request)

[heathbm]

Partial implementation of #93568 (requesting review of general approach before implementing other types since this is mostly copy & paste).

Done:

• Added DivisionRounding to System
• Added default generic IBinaryInteger DivRem implementation
• Added DivRem implementation for Int32
• Added tests for all types of DivisionRounding for Int32.DivRem

Todo:

• Add DivRem implementations for remaining types
• Add Divide and Remainder methods for all types
• Add remaining tests

Thanks for the feedback!

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[heathbm]

@tannergooding Would you be able to comment on the Math.DivRem and IBinaryInteger.DivRem approaches or recommend someone who could? Thanks.
Is this acceptable, or is something lower-level expected for this?

[jeffhandley]

@heathbm I was finally able to take a look at this. I think it's on the right track. I merged main into your branch and fixed one error in the suppression file. Are you still up for implementing the rest of it?

Thanks for your patience and your efforts on this.

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