Convert Word Mask to Bits Mask
Some ram libraries may have modules accepting bit-level mask while systems usually use word-level mask (it's compact).
Usage
module SomeRamWrapper ( word_level_mask, wdata );
`BitMaskHelper(word_level_mask, $size(word_level_mask), $size(wdata));
SomeRam u_ram (
.bits_level_mask ( word_level_mask_bits_ver ),
);
endmodule