feat: added basic docker support

[akrista]

Hey, hope everything is well

This PR aims to add basic Docker support to make self-hosting Eagle a little bit easier.

Some of the commits made are related to:

• Laravel Octane with OpenSwoole: Dropped this in for a nice performance boost!
• Laravel Horizon for Redis Queues: Added this as an alternative to handle queues with Redis if needed insted of using the queue:work
• .env.example Updates: Tweaked this file to include the debugbar_enabled variable and other octane related variables
• New Database Migration: Added a small migration to pop in the basic records the app needs when it starts up instead of using seeders (mostly for a better startup of the docker container)
• Dockerfile and Companion Files: Included the necessary files to build the Docker image and get the container running for self-hosting.
• compose.example.yml: Threw in this example file to show you how you can spin up Eagle using Docker Compose.

Here's a simple way to get it running with Docker Compose:

1. Copy the compose.example.yml file and rename it to compose.yml.
2. Set up your .env file (starting from .env.example is a good bet!).
3. Run docker compose up -d eagle in your terminal.

(Heads up: You might need some extra steps for database or environment variable setup depending on your specific server setup.)

I made a quick live example here: eagle.notakrista.com

Just a note, the base Docker setup here was largely inspired by and adapted from the github.com/exaco/laravel-octane-dockerfile project, which I've actually used before for other personal projects and found quite helpful.

Best regards