[Feature Request]: Move LidoTemplate of the contracts to tooling

[tamtamchik]

Summary

This contract is not used in the protocol and is only there for scratch deployment.

Problem

Having it included in contracts/0.4.24 causes confusion about whether it's used on-chain, and should it be added to audits scope.

Implementation

Move it to tooling/testnet folder where we have such contracts

Guidelines

• I agree to follow Code of Conduct.
• I have read Lido Contribution Guide.