[#855] 4) membership request flow frontend integration

[fenekku]

This one

• js+service: [#855] 4) integrate request flow with frontend [+]

This concludes the 2nd flow of the membership request feature. Remaining flows are

• 'waiting for decision' flow
• 'making a decision' flow

This PR depends on: https://github.com/inveniosoftware/invenio-requests/pull/382 (well not directly but for full effect)

Screencast

Screencast from 05-07-2024 02:16:56 PM.webm

(Note: "Deleted User" is something I get locally even without any of my code changes from this and previous PRs. As such putting that aside)

Previous ones

• settings-ui: [#855] set membership policy
• header-ui: [#855] add inert request membership button+modal
• permissions: add can_request_membership
• resources: [#855] add POST request_membership

[fenekku]

rebased - should fail until the dependent PRs are merged and released.

[fenekku]

I will merge this one to get all the previous ones in at the same time. Then I will rebase and cleanup the next ones and communicate again. Thanks!