[TM-262] Add `DIP Nop` rule to the optimizer

Description

Problem: DIP Nop is Nop, but our optimzier does not account for that. It is especially useful when we have something like DIP coerce_ in Lorentz.

Solution: add such a rule to the optimizer. MAP Nop is also Nop, but that is harder to do, so I did not bother for now.

Please do not merge before !95 (merged).

Related issue(s)

https://issues.serokell.io/issue/TM-262

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