Form endpoint and Sidebar endpoint

[Demurest]

…nto multisurveys_apis

Summary of the changes

<-- Please add a brief summary of the changes !-->

Observations

<-- Add some notes to keep in mind !-->

If the change is BREAKING, please give more details about the breaking changes

<-- What change breaks what and how !-->

Components that need updates and steps to follow

<-- Link repos or other PRs !-->

About this PR:

• You added the necessary documentation for the team to understand your work.
• You linked this PR to the corresponding issue or user story.
• Your changes fulfill the Definition of Done of the issue or user story.
• Your changes were tested with manual testing before being submitted.
• Your changes were tested with automatic unit tests.
• Your changes were tested with automatic integration tests.

Screensshots

<-- Add some screenshots if necessary !-->