Add BitDive to Tools section

[turmyshevd]

Adding BitDive to the Tools section.

BitDive is a zero-code integration testing platform for Java/Kotlin distributed systems that:

• Captures runtime behavior from real application execution
• Auto-generates mocks from captured data
• Replays scenarios for regression testing
• Uses Java agent for zero-code instrumentation
• Supports distributed tracing across microservices

Website: https://bitdive.io