feat: store events in sqlite, delete only on ack

[de-sh]

Closes #

Changes

Enables a webserver that accepts data events as HTTP requests, responding with a status 200 response only when uplink successfully writes the message to sqlite. This ensures that the event is not lost, as the message will only be deleted from sqlite once the broker acknowledges it, ensuring the data point has reached the broker atleast once.

Why?

Customer wants to send low frequency, "event" based data points to the platform and ensure guaranteed delivery once message is acknowledged by uplink,

Trials Performed

$ time curl -X POST http://localhost:4321/event -d "{\"stream\": \"example\", \"sequence\": 1, \"timestamp\": $(date +%s%3N) }" -H 'Content-Type: application/json'

________________________________________________________
Executed in    3.38 secs      fish           external
   usr time    4.69 millis    0.00 micros    4.69 millis
   sys time    4.64 millis  834.00 micros    3.80 millis

  2024-09-28T19:02:22.734044Z  INFO uplink::collector::events: Starting uplink event server: 0.0.0.0:4321

  2024-09-28T19:02:24.201251Z  INFO uplink::collector::events: Event received on stream: example

  2024-09-28T19:02:27.909987Z DEBUG uplink::collector::events: Event has reached broker on topic: /tenants/edge/devices/1/events/example/jsonarry