apollo-compiler: add support for serializing # comments

[bnjjj]

example:

# Here is my comment
query {
  cats
}

[ArkashaJavelin]

So, what did you think about """ """ comments? Can I join prev variant and "#" in one crate inside apollo-encoder?

[lrlna]

@ArkashaJavelin what you're referring to is a description:

"""
description
"""

Descriptions are already supported by apollo-encoder. Comments are a different graphql type, and while should also be supported by the encoder, don't have exactly the same encoding logic. Thus, the reason for this ticket.

[ArkashaJavelin]

@lrlna , thanks;)