[dev]: split up test & release into separate workflows

[jsjoeio]

Right now, we have one main workflow: ci.yaml

When you have an issue with fmt or lint, you have to push up and run the entire workflow again. We'd like to split up the workflows into two:

1. main workflow - lint, fmt, test:unit
2. release + e2e workflow

We also don't need to run the docker or arm64 steps on every workflow either.

We're hoping this + smart caching could speed up the workflow.

[stale]

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