[CONTRACTS] implement `withdraw_liquidity` tests

[0xChqrles]

implementation following the way the escrow tests are implemented.

These contracts will be holding funds, so it's of utmost importance that the tests cover 100% of possible use cases, are readable, easily modifiable, and consistent.

To better understand how the contracts work, please read this article How to manage liquidity in a P2P ramping app

These tests are also related to #86

[Jemiiah]

I would love to work on this testing @0xChqrles 😌

[onlydustapp[bot]]

Hey @Jemiiah! Thanks for showing interest. We've created an application for you to contribute to Zkramp. Go check it out on OnlyDust!

[Oshioke-Salaki]

Please can I do this?

[onlydustapp[bot]]

Hey @Oshioke-Salaki! Thanks for showing interest. We've created an application for you to contribute to Zkramp. Go check it out on OnlyDust!

[ikemHood]

Hello @0xChqrles , can i also do this one

[onlydustapp[bot]]

Hey @ikemHood! Thanks for showing interest. We've created an application for you to contribute to Zkramp. Go check it out on OnlyDust!

[thesledge04]

hello @0xChqrles can i be assigned this task?

[onlydustapp[bot]]

Hey @thesledge04! Thanks for showing interest. We've created an application for you to contribute to Zkramp. Go check it out on OnlyDust!

[chachaleo]

Can I work on this ? :)