insights: [FE] Change paradigm from sync to async operations for all queries

Created by: vovakulikov

Background

At the moment almost all our operations and queries are sync. It comes from the nature of the setting cascade approach when we have all data at once on FE and we don't need to care about async things at all. With the new API, this isn't the case anymore. We have to change our system to an async approach in order to support different (BE GQL) APIs in the future.