fix: Refactor routes to not use ember data

[minghay]

Context

The API performance improvements that we want to do is currently hinged on not using ember data and using the APIs directly, as such we need to refactor the new v2 pipeline event routes to not rely on the ember data models.

Objective

Refactors the v2 pipeline events routes to not rely on ember data models. There are components for the event cards that still need to be refactored, so in the interim those components have been removed from the template.

References

License

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