[3.14] GH-133600: Backport file reorg of `Tools/wasm/wasi`#135950

brettcannon merged 6 commits intopython:3.14python/cpython:3.14from

brettcannon:133600-backport-wasi-file-reorgbrettcannon/cpython:133600-backport-wasi-file-reorgCopy head branch name to clipboard