Finalize Tapir Integration

[fwbrasil]

The Tapir integration is functional, I've introduced an example usage, and worked with the Tapir developers to optimize it. I believe it's a good solution both in terms of usability and performance.

What's missing:

1. We need to add unit and integration tests for the integration.
2. The integration relies on internal Tapir APIs, which isn't ideal for maintenance. We'd need to work with Tapir's developers to provide first-class support for external integrations like Kyo's. Tapir's developers already indicated they'd be open to it.

[fwbrasil]

/bounty $200

Requirements:

• Good test coverage of the module
• Integration without internal Tapir classes

[hearnadam]

I removed the bounty to split the work.