feat: Stop using `ts-node` as a default loader for parsing TS configs

[k-rajat19]

Summary

Breaking Change

Currently ts-node is set as a default loader for parsing TS configs, this PR changes that behavior because now there are other good alternatives like esbuild-register so it's better to stop doing anything by default and let users specify which module they wanna use (according to their use case) in a docblock comment for loading their ts configs.

Test plan

Fixed e2e tests

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[peter-cardenas-ai]

would be great if we could remove the peer dependency on ts-node as well 👀

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