[Chore] Consolidate Results, Speedtest & Stats API Endpoints into Dedicated Controllers

[svenvg93]

📃 Description

This PR consolidates our individual endpoints into grouped controllers—ResultsController, SpeedtestController, and StatsController—making the API surface more coherent and easier to maintain. It also extracts all OpenAPI annotations into dedicated annotation classes, keeping our controllers focused purely on business logic.

🪵 Changelog

📄 Documentation

N/A

➕ Added

• ResultsController with consolidated index, show and latest results
• SpeedtestController with run and listServers methods for running tests and listing servers
• StatsController with aggregated endpoint for performance metrics
• AppController with all Application info related endpoints
• OoklaController for the server list endpoints.
• Separate annotation classes under App\OpenApi\Annotations\V1 for Results, Speedtests and Stats
• Updated route definitions to point to the new controllers and methods
• forApi function to GetOoklaSpeedtestServers to get a more useful API response on /ookla/list-servers

{
    "id": "52365",
    "host": "speedtest.ams.t-mobile.nl.prod.hosts.ooklaserver.net:8080",
    "name": "Odido",
    "location": "Amsterdam",
    "country": "Netherlands"
},

✏️ Changed

• Move /api/healthcheck from routes to new AppController

📷 Screenshots

If this PR has any UI/UX changes it's strongly suggested you add screenshots here.