[feature] Basic documents management

[seland]

Feature / Issue

As a user I want to manage some documents inside the Pangea. We will only deal with pictures for now.
Basic functionality includes:

• adding document
• viewing list of added documents
• deleting document

Todos

• UX/UI designs (@mimetic)
• Panthalassa methods (@florianlenz)
• Implement UI and logic on Pangea side (@seland)

Acceptance criteria

User can manage documents:

• User can view a list of documents
• User can view details of a single document from the list
• User can add new documents with metadata
• User can edit metadata of an existing document

Version 2

• User can delete items (documents) in the list of documents on the app (ON HOLD: invalidating them on the blockchain)
  ON HOLD: User can invalidate documents on the blockchain
  ON HOLD: User can verify documents on the blockchain by comparing to a document file

[mimetic]

1. Question: How to view a document? Can you view the picture?
2. And, why are we doing this? What's the use-case?
3. I can make a generic document CRUD (create, view, update, delete) interface, if you just want me to follow instructions.

[mimetic]

➤ Wrike Bot commented:

@david Gross@Florian Lenz All the necessary task dependencies have been completed, so you can start working on it right away.