refactor/AB#82357_create-shared-error-handler-logic-for-the-app

[unai-reliefapp]

Description

• feat: add error handler to display default snackbar message from one place for all error coming from our API that are not graphQL related
• feat: refactor all graphql errors to be treated in the error section of the subscription
• feat: adapt all grapql subscriptions in order to keep the errors correctly handled as the aforementioned reason

Useful links

• Link to ticket

Type of change

Please delete options that are not relevant.

• Improvement (refactor or addition to existing functionality)

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce.

• Test A
• Test B

Screenshots

Please include screenshots of this change. If this issue is only back-end related, and does not involve any visual change of the platform, you can skip this part.

Checklist:

( * == Mandatory )

• * I have set myself as assignee of the pull request
• * My code follows the style guidelines of this project
• * Linting does not generate new warnings
• * I have performed a self-review of my own code
• * I have put the ticket for review, adding the oort-frontend team to the list of reviewers
• * I have commented my code, particularly in hard-to-understand areas
• * I have put JSDoc comment in all required places
• * My changes generate no new warnings
• * I have included screenshots describing my changes if relevant
• * I have selected labels in the Pull Request, according to the changes with code brings
• I have made corresponding changes to the documentation ( if required )
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules

More explanation

https://www.loom.com/share/05a716d61b9744faaf51fb304c21d1e5?sid=f87cf896-582a-4f76-93ae-8ceed801b145