fix: godog step definitions within method declarations

[tigh-latte]

🤔 What's changed?

Add treesitter queries for finding godog steps within methods.

⚡️ What's your motivation?

We currently load up our godog steps from a method with variable attributes attached, so the language service isn't finding them.

So, while this currently works:

func Steps(sc *godog.ScenarioContext) {
    sc.Given(`^I test this change$`, handler)
}

This doesn't:

func (s suite) Steps(sc *godog.ScenarioContext) {
    sc.Given(`^I test this change$`, s.handler)
}

🏷️ What kind of change is this?

• 🐛 Bug fix (non-breaking change which fixes a defect)

♻️ Anything particular you want feedback on?

Nope it's all good.

📋 Checklist:

• I agree to respect and uphold the Cucumber Community Code of Conduct
• I've changed the behaviour of the code
  • I have added/updated tests to cover my changes.
• My change requires a change to the documentation.
  • I have updated the documentation accordingly.
• Users should know about my change
  • I have added an entry to the "Unreleased" section of the CHANGELOG, linking to this pull request.

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[kieran-ryan]

Sound! Appreciated, apologies for delay to review. Buíochas

[tigh-latte]

Fadhb ar bith a chara