feat(ft): added blueprint support (#459)

Author: CleoMenezesJr

lua/Comment/ft.lua

@@ -47,6 +47,7 @@ local L = setmetatable({
     bash = { M.hash },
     beancount = { M.semicolon },
     bib = { M.latex },
+    blueprint = { M.cxx_l }, -- Blueprint doesn't have block comments
     c = { M.cxx_l, M.cxx_b },
     cabal = { M.dash },
     cmake = { M.hash, M.hash_bracket },