Add support for GraphQL injections in ECMA (JS/TS) without `gql` tag

[souserge]

I noticed that Helix automatically injects GraphQL syntax highlighting when a template literal in TypeScript/JavaScript is tagged with gql:

helix/runtime/queries/ecma/injections.scm

Lines 25 to 31 in d0218f7

	; Parse the contents of gql template literals
	((call_expression
	function: (identifier) @_template_function_name
	arguments: (template_string) @injection.content)
	(#eq? @_template_function_name "gql")
	(#set! injection.language "graphql"))

However, my GraphQL queries are pre-processed using a function called graphql as is the standard practice with many GraphQL TS tools, including gql.tada and @graphql-codegen/cli. They cannot work together with the gql tag, no matter the implementation.

Should there be a way to enable the injection without the tag? E.g. a common practice is to add /* GraphQL */ before the string literal to signal to tools that the string is a GraphQL query:
https://github.com/search?q=%22%2F*+GraphQL+*%2F%22&type=code

The official VSCode plugin supports the following options:
https://github.com/graphql/graphiql/blob/main/packages/vscode-graphql-syntax/tests/__fixtures__/test.ts

[kpbaks]

I am not familiar with the JS/TS ecosystem, but I know we allow prefix comments to inject languages into strings in nix, which works well. I think it would be a good idea to extend the queries to support this for GraphQl.