[Experiment] Implement an alternative Factory with Clones

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Current factory uses solmate's CREATE3 function to deploy a bare minimal proxy that is dependent only on salt & msg.sender (factory itself)

An alternative is to use OZ's clone library to cheaply clone a proxy to an implementation.

Required changes:

• Refactor Funnel.sol to use an initializer function
• Refactor FunnelFactor to use Clone

Reference: https://github.com/ourzora/faucets

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Before clones

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After clones