Convert bindings_ffi to use tracing rather than log

[insipx]

Using the tracing crate in bindings_ffi makes it consistent with the rest of the crate. Using tracing has many other benefits as well:

• Easy toggling between human-readable and structured logging
• extremely configurable formats
• tracing preserves context of async tasks/spans, making it easier to follow their execution
• ability to attach third party log viewers to converse for instance consider bevys strategy