represent meetup participants with avatar animals for easy verification and troubleshooting

[brenzi]

The following issue shows that we need better guidance for participants

encointer/pallets#213 (comment)

The root cause of above issue was that there is no way to cross-check the scanning of claims once the claim has been scanned successfully.

idea

1. Define a set of ~20 lovely animals (to cover for the biggest expected meetups)
2. Assign animals to participants based on their participant index inside the meetup set
3. show the animal above the QR claim
4. on the scanning page, show all animals that have been successfully scanned (and also show the ones who have not been scanned yet, possibly greyed-out)
5. allow to delete single animals's claims
6. warn if more claims have been scanned than vote-1
7. upon submitting claims, warn if number of claims != vote (if too few, there may be a chance

something like:

[brenzi]

@clangenb please review this proposal. I think this is a bit of work, but should be pretty straightforward to implement,

[clangenb]

This is beautiful, and straightforward!

When submitting, we could also show an info:

• submitting 12 claims in total for: .

[brenzi]

We could use utf8 animal symbols, but I fear they will look different on Android than on iOS, which would be confusing

[clangenb]

The icon can simply be assigned based on the index in the registry:

encointer-wallet-flutter/lib/page-encointer/meetup/scan_claim_qr_code.dart

Line 21 in 8aa2a63

final registry = store.encointer.communityAccount!.meetup!.registry;

But please ensure that the order is the same on multiple devices (I think this should be the case, but if in doubt, we should sort the entries).

[brenzi]

And I like the idea of making the icon set customizable by community. This could add a lot of social identification