Added sparkle update signing tool
Added sparkle update signing tool

brorbw/Helium,chenruixuan/Helium,JadenGeller/Helium,AgtLucas/Helium,slashlos/Helium,aksalj/Helium,brorbw/Helium,slashlos/Helium,chenruixuan/Helium,julienmissial/Helium,julienmissial/Helium,julienmissial/Helium,AgtLucas/Helium,AgtLucas/Helium,aksalj/Helium,aksalj/Helium,julienmissial/Helium,slashlos/Helium,aksalj/Helium,itsthisjustin/HeliumLift,itsthisjustin/HeliumLift,JadenGeller/Helium,slashlos/Helium,AgtLucas/Helium,brorbw/Helium,chenruixuan/Helium,chenruixuan/Helium,slashlos/Helium,brorbw/Helium