added more hpv funcs and made primshell

Src/Hyperion-core-v1.0.0/lib/sys/fs

@@ -1,3 +1,4 @@
+--:Minify:--
 local fs={}
 
 -- "VFS_open" : open
@@ -136,4 +137,8 @@ function fs.setcwd(path)
     return syscall.VFS_setcwd(path)
 end
 
+function fs.isDir(path)
+    return syscall.VFS_isDirectory(path)
+end
+
 return fs