* initial riscv64 port
* enable Paging Mode feature for all architectures
* riscv: add missing protocol docs
* riscv: fix tests
* docs: clarify `LIMINE_PAGING_MODE_DEFAULT` macro
* build: fix whitespace in common/GNUmakefile
* riscv: default to Sv48 paging when supported
* vmm: make `VMM_MAX_LEVEL` 1-indexed
* limine: do not call `reported_addr()` before finaling paging mode
smp/riscv: do not overwrite the argument passed to APs
* limine/riscv: update default paging mode in limine.h
* test/riscv: pad OVMF.fd when downloading it
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