feat(frontend): add hasura mutation to change email subscription flag

[leisterfrancisco]

Resolves #698 Resolves #699
Resolves #700

What does this PR do?

Add route to change email subscription

How should this be tested?

• Make run
• Go to http://localhost:3000/cancel-email-subscription/:account
• Click on cancel subscription
• Check email_subscription flag set to false

[Edgar097]

@leisterfrancisco If i'm not log in and I type http://localhost:3000/cancel-email-subscription/:account it let me unsuscribe, i get a error snackbar and then the page location change to.

Just for you to know Also the email subscription is not changing at least for donors getting the same snackbar error

[leisterfrancisco]

Email subscription flag not changing in the database

@Edgar097 your fail case is working perfectly to me, did you rerun the project with make run