graphql codegen init missing plugin

[Diluka]

Describe the bug
when config to codegen typescript client such as apollo client, the plugin typescript-operations is missing. then generated file using types without declaration.

To Reproduce
Steps to reproduce the behavior:

1. npx graphql-cli init
2. choose 3
3. choose 2
4. choose react Apollo
5. other steps using defaults

Expected behavior
have plugins below

plugins:
  - typescript
  - typescript-operations
  - typescript-react-apollo

Screenshots
If applicable, add screenshots to help explain your problem.

Versions (please complete the following information):

• OS: [e.g. Windows 10, OS X High Sierra, Ubuntu 16.04]
• graphql-cli: [e.g. 2.16.5]
• other packages if applicable

Additional context
should have codegenPlugins.add('typescript-operations');

graphql-cli/packages/commands/init/src/features/codegen.ts

Lines 66 to 85 in fad5278

 case FrontendType.TSReactApollo: 
   codegenPlugins.add('typescript'); 
   codegenPlugins.add('typescript-react-apollo'); 
   break; 
 case FrontendType.ApolloAngular: 
   codegenPlugins.add('typescript'); 
   codegenPlugins.add('typescript-apollo-angular'); 
   break; 
 case FrontendType.StencilApollo: 
   codegenPlugins.add('typescript'); 
   codegenPlugins.add('typescript-stencil-apollo'); 
   break; 
 case FrontendType.TSUrql: 
   codegenPlugins.add('typescript'); 
   codegenPlugins.add('typescript-urql'); 
   break; 
 case FrontendType.GraphQLRequest: 
   codegenPlugins.add('typescript'); 
   codegenPlugins.add('typescript-graphql-request'); 
   break;