Add network information to listValidEnvironments (#986)

### Feature or Bugfix
- Bugfix

### Detail
Missing API output definition to list environment networks in creation
of notebooks

### Relates
- #983 

### Security
Please answer the questions below briefly where applicable, or write
`N/A`. Based on
[OWASP 10](https://owasp.org/Top10/en/).

- Does this PR introduce or modify any input fields or queries - this
includes
fetching data from storage outside the application (e.g. a database, an
S3 bucket)?
  - Is the input sanitized?
- What precautions are you taking before deserializing the data you
consume?
  - Is injection prevented by parametrizing queries?
  - Have you ensured no `eval` or similar functions are used?
- Does this PR introduce any functionality or component that requires
authorization?
- How have you ensured it respects the existing AuthN/AuthZ mechanisms?
  - Are you logging failed auth attempts?
- Are you using or adding any cryptographic features?
  - Do you use a standard proven implementations?
  - Are the used keys controlled by the customer? Where are they stored?
- Are you introducing any new policies/roles/users?
  - Have you used the least-privilege principle? How?


By submitting this pull request, I confirm that my contribution is made
under the terms of the Apache 2.0 license.

---------

Co-authored-by: Noah Paige <noahpaig@amazon.com>

backend/dataall/core/environment/api/types.py

@@ -136,6 +136,11 @@
             type=gql.Ref('Organization'),
             resolver=get_parent_organization,
         ),
+        gql.Field(
+            name='networks',
+            type=gql.ArrayType(gql.Ref('Vpc')),
+            resolver=resolve_vpc_list,
+        )
     ],
 )
 

frontend/src/services/graphql/Environment/listValidEnvironments.js

@@ -17,6 +17,11 @@ export const listValidEnvironments = ({ filter }) => ({
             name
             label
           }
+          networks {
+            VpcId
+            privateSubnetIds
+            publicSubnetIds
+          }
         }
       }
     }