Update faucet handling for tests

[wulfraem]

Description

Allow using a funded account to distribute funds to test account instead of calling the faucet directly with every test account.

Motivation

Current implementation makes too many calls against the faucet, which can lead to getting put on an IP based denylist. To reduce those calls, we want to allow using a single funded account and transferring funds to test accounts created during tests.

To-do list

• add logic to funds test accounts via a single account
• behavior must be togglable via env
• tests must still run; consider adding a mutix, if we run into transaction issues during parallel tests

Change checklist

Add an x to the boxes that are relevant to your changes, and delete any items that are not.

• The feature or fix is implemented in Rust and across all bindings whereas possible.
• The feature or fix has sufficient testing coverage
• All tests and examples build and run locally as expected
• Every piece of code has been document according to the documentation guidelines.