Waylon/tests

[0xJepsen]

This PR fixes a bug we had with transactions hanging perpetually on a paused environment. This PR adds checks to both the call and send_transaction method on the middleware to reduce calls that get through. It also added proper error handling on the off chance that some get through they will return an environment error alerting the user that the environment is paused. Some predominant changes for this improvement include:

• changing all atomic ordering rules to SeqCst to reduce concurrency bugs
• Adds a TransactionOutcome enum to the RevmResult to indicate environment errors to the middleware
• Added additional error checking in the send_transaction and call implementations.
• When we enter a paused state in the environments run method, we loop through all potentially caught last transactions and propagate a pause error for each.
• There are some formatting and clippy changes from cargo fmt (trying to converge to a happy clippy before release)