feat: create function to call execute_liquidation

[zarboq]

Feature Request

Describe the Feature Request

Create a function to execute execute_liquidation function from satoru in liquidation_handler contract.

Describe Preferred Solution

Add it as a function in src/keepers/common.rs

[delaaxe]

interested in this one, is there a reference keeper to take inspiration from?

[zarboq]

I assigned you ! We already have some examples of function to call cairo functions in the code like here and in PR #9