[Tracking] Setup integration tests

[alexfertel]

This issue tracks the work required to set up the infrastructure for our integration test suite.

This work is mainly blocked because we need a reliable, fast way of booting up a local, Stylus-compatible fork. Ideally, we have something like anvil, provided by the Stylus team.

• Spike: Create a PoC with anvil that showcases the missing pieces required to make it work with Stylus.
• Spike: Research possible alternatives.

Tasks

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1. Setup integration tests using nitro-testnode #53
   effort: medium priority: 3 type: test +3
   
2. Scale e2e tests #72
   needs triage type: feature +2
   
3. Migrate test infra to alloy. #81
   effort: medium priority: 2 type: refactor +3
   

[alexfertel]

After some time researching this, we concluded that it's not possible without the help of the Stylus team.

Until they have the capacity to help us with this, we will take the approach of booting up nitro-testnode locally and running our tests against it. This will be based on previous work by myself and @qalisander

[alexfertel]

Completed!