chore(rome_service): remove constraints from settings

[ematipico]

Summary

This PR is a follow up of #3123

This PR removes all the constraints that we have inside the WorkspaceSettings. Now the settings are not publicly exposed anymore, so we can remove all the serde/schemars macros. This will allow to have more choice with the data structures we want to choose.

Test Plan

This is an internal refactor, so the existing CI should pass.

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Playground for commit 3261fc6

[MichaReiser]

Would you mind explaining what you mean by "constraints"

removes all the constraints

[ematipico]

Would you mind explaining what you mean by "constraints"

removes all the constraints

WorkspaceSettings was tagged with serde::Deserialize and serde::Serialize, which means we could only choose data structures that are already serializable/de-serializable or data structures that require custom function to serialize/de-serialize them. So in a sense it was a constrain/bump.

Now that we don't need serde here, we can choose all the data structures that we see fit without worrying about their serialization/de-serialization.