CLI should process consecutive JSONs

The CLI should support (by default or behind a flag) processing multiple consecutive JSONs. This is inspired by jq that allows just that.

When I have have a stream of JSONs, I can process them all in jq - think of logs or cat *.json:

$ echo '{"a": 1} [1,2,3] 42 false null "alpha"' | jq
{
  "a": 1
}
[
  1,
  2,
  3
]
42
false
null
"alpha"

However if they are JSON5 format, I cannot use json5 as a filter before they reach jq (I would expect the same result as above):

$ echo '{a: 1} [1,2,3,] 0x2A false/* not true */ null '\'alpha\' | json5 | jq
JSON5: invalid character '[' at 1:8