ci: split docker compose and add reusable E2E workflow

[rabi-siddique]

Changes

• Split the docker-compose file into shared(docker-compose-base.yml) and specific(docker-compose-vaults.yml) configurations.
• Added a reusable workflow for end-to-end (E2E) tests.

Motivation

While working on Liquidation tests in PR #268, I noticed that the CI process takes too long because we were running both Vaults and Liquidation test cases in a single GitHub Actions runner. To optimize our CI workflow, this PR enables parallel GitHub Action runners for running Vaults and Liquidation(when #268 is merged) E2E tests separately. This can save us time and simplify the management of our tests and CI workflows.

I've already implemented these changes in PR #268, but I want to keep that PR focused and prevent it from becoming too large. Once this PR is merged, I can rebase PR #268 accordingly.

[turadg]

This doesn't affect development or maintenance of the dapp so @samsiegart and I don't have any special insight into it. I think @frazarshad would be a suitable approver.

[github-actions[bot]]

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