Rollup of 13 pull requests

[Zalathar]

Successful merges:

• Warn on codegen attributes on required trait methods #148756 (Warn on codegen attributes on required trait methods)
• Add new Tier-3 target: riscv64im-unknown-none-elf #148790 (Add new Tier-3 target: riscv64im-unknown-none-elf)
• feat: dlopen Enzyme #149271 (feat: dlopen Enzyme)
• std: sys: fs: uefi: Implement set_times and set_perm #149459 (std: sys: fs: uefi: Implement set_times and set_perm)
• bootstrap readme: make easy to read when editor wrapping is not enabled #149771 (bootstrap readme: make easy to read when editor wrapping is not enabled)
• Provide an extended framework for type visit, for use in rust-analyzer #149856 (Provide an extended framework for type visit, for use in rust-analyzer)
• Simplify how inline asm handles MaybeUninit #149950 (Simplify how inline asm handles MaybeUninit)
• Metadata loader cleanups #150014 (Metadata loader cleanups)
• document that mpmc channels deliver an item to (at most) one receiver #150021 (document that mpmc channels deliver an item to (at most) one receiver)
• Update books #150029 (Update books)
• assert impossible branch is impossible #150031 (assert impossible branch is impossible)
• do not add I-prioritize when F-* labels are present #150034 (do not add I-prioritize when F-* labels are present)
• Use the embeddable filename for coverage artifacts #150036 (Use the embeddable filename for coverage artifacts)

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