Collect UBI only once per day (and device/tab)

[jaensen]

• [ ] create "enqueue" mutation to enqueue jobs from a client
• [ ] create "request_ubi" job description
• [ ] create "request_ubi" job worker
• [ ] create "request_ubi" notification and route it to a specific client by it's sessionId
• [ ] update client logic

Client:

1. Every client queries the last ubi timestamp from the api
2. Every client sets a timer that is due 24h after the last ubi
3. On 'timer due':
   • every minute while last ubi > 24h:
   • all clients enqueue a "request_ubi"-job with the following parameters:
     • Id fields: safeAddress, year, month, day, hour
     • Payload fields: sessionId

Api:

4. The api creates one "request_ubi"-worker instance for the first recognized enqueued job with this id
5. The job worker sends a "request_ubi" notification to the client with the "sessionId" from the payload and waits up to one minute for a corresponding "crc_minting"-event from the blockchain indexer

Success case:

6. The client requests the ubi
7. The waiting job worker receives the "crc_minting" event and completes successfully
8. Client's loop at 3) ends

Client unavailable/UBI not requested case:

6. The job worker times-out and the corresponding job fails.
7. Client's loop at 3) enqueues a new job