Add interaction logs

[MaxStalker]

Description

• Transaction result can't be returned before new block is commited and all changes done by transaction are calculated and stored. I've added new admin endpoint, which will allow to access logs by transaction id at /emulator/logs/{txId}. This will keep Backend in complience with access.API interface and (technically 😅) shouldn't break existing solutions 🤞
• Script result can be returned with HTTP request, so we create new type, which holds all the fields of ScriptResult, add new field Logs and then encode it as json

Drawbacks

• gRPC endpoints are not implemented 😬

@sideninja need your advice on how to properly implement/improve this feature 🙇

Closes #223

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For contributor use:

• [x] Targeted PR against master branch
• [x] Linked to GitHub issue with discussion and accepted design OR link to spec that describes this work
• [x] Code follows the standards mentioned here
• [ ] Updated relevant documentation
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