Run Speedtests from the API

[alexjustesen]

📃 Description

This PR introduces a new POST request endpoint /api/v1/speedtests/run to run a speedtest via the API. The API will respond with the result ID and a new status of "waiting".

This PR expands on the work started in #2201.

• closes Remotely trigger speedtests #1047

📖 Documentation

https://docs.speedtest-tracker.dev/api/v1#run-speedtest

🪵 Changelog

➕ Added

• API abilities for results:read and speedtests:run, on deployment/update all existing token will be scoped to the results:read ability only. To use speedtests:run a new API token needs to be created.
• "waiting" result status for when a speedtest was created in the database but has not been picked up by a queue worker.

✏️ Changed

• removed ID column from API tokens list and added created_at date.