allow passing schema plugins

Author: villesau

__tests__/__fixtures/tsconfig/graphql-let.yml

@@ -4,6 +4,8 @@ documents:
 plugins:
     - typescript-operations
     - typescript-react-apollo
+schemaPlugins:
+    - typescript-urql-graphcache
 config:
     useIndexSignature: true
 TSConfigFile: es3config.json

__tests__/__fixtures/tsconfig/graphql-let2.yml

@@ -4,6 +4,8 @@ documents:
 plugins:
     - typescript-operations
     - typescript-react-apollo
+schemaPlugins:
+    - typescript-urql-graphcache
 config:
     withHOC: false
     withHocks: true

__tests__/__fixtures/tsconfig/graphql-let3.yml

@@ -4,6 +4,8 @@ documents:
 plugins:
     - typescript-operations
     - typescript-react-apollo
+schemaPlugins:
+    - typescript-urql-graphcache
 config:
     useIndexSignature: true
 cacheDir: .cache

__tests__/__fixtures/tsconfig/graphql-let4.yml

@@ -7,6 +7,8 @@ documents:
 plugins:
     - typescript-operations
     - typescript-react-apollo
+schemaPlugins:
+    - typescript-urql-graphcache
 config:
     useIndexSignature: true
 cacheDir: .cache