An initial spec setup for getting things going.

[russ]

No assertions yet. I need to probably put a database in play to see if jobs are being ran in specs.

[Copilot]

Pull Request Overview

This PR establishes an initial test specification setup for the TJLavin project, introducing basic testing infrastructure for a job queue system that uses AMQP for message queuing.

Key changes:

• Added core dependencies (JSON and AMQP client) to the main module
• Created a test worker helper class to facilitate testing of queued jobs
• Set up basic test infrastructure with spec helper and initial job enqueueing test
• Configured GitHub Actions CI workflow with formatting, linting, and testing jobs

Reviewed Changes

Copilot reviewed 5 out of 6 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
src/tj_lavin.cr	Adds JSON and AMQP client dependencies to support job queue functionality
spec/support/my_worker_helper.cr	Creates a test worker class extending TJLavin::QueuedJob for testing purposes
spec/spec_helper.cr	Configures test environment with logging, AMQP URL, and TJLavin setup
spec/job_spec.cr	Implements basic job enqueueing test with placeholder for future assertions
.github/workflows/ci.yml	Sets up CI pipeline with format checking, linting, and specs using LavinMQ service

---

_{Tip: Customize your code reviews with copilot-instructions.md. Create the file or learn how to get started.}