Remove nearcore crates dependencies

[akorchyn]

Currently, developing an app requires near-primitives to interact with the result types of transactions as near-api propagates them.

As for me, it's pretty inconvenient, and would be better if we created some own wrapper type as near-workspaces does

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1. CryptoHash
2. Result types
3. Query outputs
4. ...

[akorchyn]

I updated the issue as we have a lot of types coming from near-primitives when querying the chain.
It's mandatory to replace them with our types and not export them to have a more robust API overall.

The motivation is simple. We don't want to have a breaking release on each near-primitives release as it's not that convenient to use. To have that, near-api should have all the parts wrapped :)

[akorchyn]

The work on it will be done in own-types branch