Add macros st_atime, st_ctime, st_mtime, UTIME_NOW, and UTIME_OMIT in sys/stat.yaml

Author: StarOne01

libc/utils/docgen/sys/stat.yaml

@@ -15,6 +15,16 @@ macros:
     in-latest-posix: ''
   S_IFSOCK:
     in-latest-posix: ''
+  st_atime:
+    in-latest-posix: ''
+  st_ctime:
+    in-latest-posix: ''
+  st_mtime:
+    in-latest-posix: ''
+  UTIME_NOW:
+    in-latest-posix: ''
+  UTIME_OMIT:
+    in-latest-posix: ''
 
   S_IRWXU:
     in-latest-posix: ''