Create simple query builder for entity viewer

[lukashornych]

It seems that developers who use mainly GraphQL API for using evitaDB, don't use entity viewer even for simple single entity get by ID or attribute.

We could create very simple query filter for the entity viewer which would be alternative too evitaQL filter by input. This builder would support only basic constraints like entityPrimaryKeyInSet, attributeEquals and so on, maybe even and, or and not containers. It wouldn't support any more complex queries.

We should also make even simpler version for quick lookup without opening any dialog directly in the filter by input where a user would select by what to filter (primary key or specific attribute) and what it should equals.

[lukashornych]

However, we need to check with the developers if it something that would help them.