Improve linting for graphql

[tobiasdiez]

https://github.com/apollographql/eslint-plugin-graphql
https://github.com/cjoudrey/graphql-schema-linter

Require all operations to be named.

[tobiasdiez]

https://github.com/dotansimha/graphql-eslint

[tobiasdiez]

ToDos:

• Also lint vue files: Support extracting GraphQL documents from vue/svelte files dimaMachina/graphql-eslint#480
• Todos in the code

  JabRefOnline/.eslintrc.js

  Lines 60 to 90 in f3bf73b

  	// Make sure to not prefix id names with typename, i.e. 'id' instead of 'userId'.
  	'@graphql-eslint/avoid-typename-prefix': 'error',
  	// Requires all types to be reachable at some level by root level fields.
  	'@graphql-eslint/no-unreachable-types': 'error',
  	// Enforces that deprecated fields or enum values are not in use by operations.
  	// TODO: Set this to error once we follow this convention
  	'@graphql-eslint/no-deprecated': 'warn',
  	// Enforces unique fragment name.
  	'@graphql-eslint/unique-fragment-name': 'error',
  	// Enforces unique operation names.
  	// TODO: Does not work yet
  	// '@graphql-eslint/unique-operation-name': 'error',
  	// Requires to use """ or " for adding a GraphQL description instead of #.
  	// TODO: Does not work yet, so set to warn
  	'@graphql-eslint/no-hashtag-description': 'warn',
  	// Requires sname for your GraphQL operations.
  	'@graphql-eslint/no-anonymous-operations': 'error',
  	// Make sure to not add the operation type to the name of the operation, e.g. 'user' instead of 'userQuery'.
  	'@graphql-eslint/no-operation-name-suffix': 'error',
  	// Requires all deprecation directives to specify a reason
  	'@graphql-eslint/require-deprecation-reason': ['error'],
  	// Enforces descriptions in your type definitions
  	'@graphql-eslint/require-description': [
  	'warn',
  	{ on: ['ObjectTypeDefinition', 'FieldDefinition'] },
  	],
  	// Checks for duplicate fields in selection set, variables in operation definition, or in arguments set of a field.
  	'@graphql-eslint/avoid-duplicate-fields': ['error'],
  	// Requires mutation argument to be always called "input" and input type to be called Mutation name + "Input".
  	// TODO: Set this to error once we follow this convention
  	'@graphql-eslint/input-name': ['warn', { checkInputType: true }],