fix(ts): import gql files, closes Akryum/vue-cli-plugin-apollo#180

Author: Guillaume Chau

types/gql.ts

@@ -0,0 +1,14 @@
+declare module '*.gql' {
+  import { DocumentNode } from 'graphql'
+
+  const content: DocumentNode
+  export default content
+
+}
+
+declare module '*.graphql' {
+  import { DocumentNode } from 'graphql'
+
+  const content: DocumentNode
+  export default content
+}

types/index.d.ts

@@ -1,4 +1,5 @@
 import './vue'
+import './gql'
 import { VueApollo } from './vue-apollo'
 import { ApolloProvider } from './apollo-provider'