Convert .json config files to .yaml (#284)

Co-authored-by: google-labs-jules[bot] <161369871+google-labs-jules[bot]@users.noreply.github.com>

Author: brianquinlan

pkgs/unix_api/constants.json

@@ -0,0 +1,74 @@
+"<sys/stat.h>":
+  - AT_SYMLINK_NOFOLLOW
+  - AT_RESOLVE_BENEATH
+  - AT_EMPTY_PATH
+  - S_IEXEC
+  - S_IFBLK
+  - S_IFCHR
+  - S_IFDIR
+  - S_IFIFO
+  - S_IFLNK
+  - S_IFMT
+  - S_IFREG
+  - S_IFSOCK
+  - S_IFWHT
+  - S_IREAD
+  - S_IRGRP
+  - S_IROTH
+  - S_IRUSR
+  - S_IRWXG
+  - S_IRWXO
+  - S_IRWXU
+  - S_ISGID
+  - S_ISTXT
+  - S_ISUID
+  - S_ISVTX
+  - S_IWGRP
+  - S_IWOTH
+  - S_IWRITE
+  - S_IWUSR
+  - S_IXGRP
+  - S_IXOTH
+  - S_IXUSR
+  - UF_APPEND
+  - UF_HIDDEN
+"<errno.h>":
+  - EACCES
+  - EDOM
+  - EEXIST
+  - EINTR
+  - EMFILE
+  - ENOENT
+  - ENOSPC
+  - ENOTDIR
+  - ENOTEMPTY
+  - EPERM
+"<fcntl.h>":
+  - AT_FDCWD
+  - AT_REMOVEDIR
+  - O_APPEND
+  - O_CLOEXEC
+  - O_CREAT
+  - O_DIRECTORY
+  - O_EXCL
+  - O_RDONLY
+  - O_TRUNC
+  - O_WRONLY
+"<limits.h>":
+  - PATH_MAX
+"<dirent.h>":
+  - DT_BLK
+  - DT_CHR
+  - DT_DIR
+  - DT_FIFO
+  - DT_LNK
+  - DT_REG
+  - DT_SOCK
+  - DT_UNKNOWN
+"<stdio.h>":
+  - L_ctermid
+"<unistd.h>":
+  - F_OK
+  - R_OK
+  - W_OK
+  - X_OK