feat: add prisma support (#188)

Docs: https://www.prisma.io/docs/concepts/components/prisma-schema#comments

Author: Dosx001

lua/Comment/ft.lua

@@ -76,6 +76,7 @@ local L = {
     purescript = { M.dash, M.haskell_b },
     python = { M.hash }, -- Python doesn't have block comments
     php = { M.cxx_l, M.cxx_b },
+    prisma = { M.cxx_l },
     r = { M.hash }, -- R doesn't have block comments
     readline = { M.hash },
     ruby = { M.hash },