[TM-280] Add support for Lorentz entrypoints

Description

Problem: we want to support multiple entrypoints feature in Lorentz. In particular, this requires us being able to lookup for specific entrypoint and construct a call to it, and ensure that entrypoints declared for parameter are always valid.

Solution: since we support multiple ways to derive entrypoints (no entrypoints, plain and way for deeply nested structures), and now we should know at type-level which one is used, we define a type class inhabitted with mentioned derivation ways, and in existing ParameterEntryPoints typeclass we expect user to implement a type family referring to one of these derivation ways.

Related issue(s)

https://issues.serokell.io/issue/TM-280

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