[REFACTOR] Add new variant for routing approach

[Sarthak1799]

Feature Description

We need to add a new variant other for RoutingApproach enum so that it does not break on stagger.

Possible Implementation

We need to introduce a enum variant Other(String) which will be defaulted to when deser errors happen

Have you spent some time checking if this feature request has been raised before?

• I checked and didn't find a similar issue

Have you read the Contributing Guidelines?

• I have read the Contributing Guidelines

Are you willing to submit a PR?

Yes, I am willing to submit a PR!