[SYNPY-1674]: Implement Form

[linglp]

Problem:

Implement the following endpoints:

• POST /form/group: https://rest-docs.synapse.org/rest/POST/form/group.html
• POST /form/data: https://rest-docs.synapse.org/rest/POST/form/data.html
• POST /form/data/list/reviewer: https://rest-docs.synapse.org/rest/POST/form/data/list/reviewer.html
• POST /form/data/list: https://rest-docs.synapse.org/rest/POST/form/data/list.html
• Add a helper function to download content of form data

[thomasyu888]

This may conflict with submissions status that jenny is working on - unless it's using the same model. I would coordinate

[thomasyu888]

@linglp I looked at the API, and one easy way to resolve this is to just do something like FormSubmissionStatus

Just a suggestion, but I'll let you and Jenny decide together

Notice the subtle difference:

• org.sagebionetworks.repo.model.SubmissionStatus
• org.sagebionetworks.repo.model.form.SubmissionStatus

[linglp]

Thanks Tom. It makes sense to rename this class to FormSubmissionStatus!