Joshua Hannan

Updates the NFTStorefront contracts and transactions to have [error messages that are much more clear](https://github.com/onflow/docs/issues/795) and use the new [string interpolation feature](https://github.com/onflow/flips/blob/main/cadence/20240923-simple-string-interpolation.md) in Cadence. The code has not been tested...

### Issue to be solved In the latest cadence release, we updated the error messages to be a lot more descriptive, but the testing framework still shows pretty vague errors....

### Issue to be solved It would be nice to have a built-in way to upgrade a contract instead of having to run an upgrade contract transaction manually ### Suggested...

[Testing Framework] Get events emitted during a specific transaction

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### Issue to be solved Currently, it seems like the only way to query for emitted events is to use the `blockchain.eventsOfType()` function, but this returns all the events of...