[TBTC-3] Testing scenarios and automatic network tests

Description

We want to be able to perform automatic testing on the real network for our contracts. In order to achieve this scripts templates for deploying and testing were added. Also added logic for test scenarios for contracts written in Lorentz. So it is easy to write such scenarios, convert it to the raw Michelson representation and use in testing scripts.

Related issue(s)

https://issues.serokell.io/issue/TBTC-3

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