[draft] graphql-parser: 0.2 -> 0.3

[samuela]

An attempt at upgrading the graphql-parser dependency to the latest version.

Unfortunately, this is a huge PITA due to fundamental changes in how graphql-parser handles the underlying text data. IIUC in previous versions Strings were just copied around and ownership of an AST node implied ownership of all the data necessary to print out what it is. However in the latest version, the seems to have changed to AST nodes only owning pointers with non-local lifetimes into the underlying text data. See eg https://docs.rs/graphql-parser/0.3.0/graphql_parser/query/trait.Text.html which is now the underlying trait for text data.

I'm not at all familiar with the graphql-client or graphql-parser codebases, so I only attempted a relatively naive "play-with-lifetimes" approach. I've sunk enough hours into this already, and I'm stuck at this point so putting this out there as a draft PR for anyone to extend/adapt/fix as they'd like!

[mathstuf]

So I took a stab at this. It's really involved :( . I asked upstream if there was some way to get back the lifetime-less interface here: graphql-rust/graphql-parser#41

[mathstuf]

Well, things are a lot better if you just ignore the lifetime support in the parser and use <'static, String> everywhere. I'll have a PR up shortly.

[mathstuf]

See #396.

[mathstuf]

Closing in preference for #396.