feat(core): add enhanced wait strategies (#855)

- Add HttpWaitStrategy for HTTP endpoint waiting with TLS, auth, headers
support
- Add HealthcheckWaitStrategy for Docker health check status monitoring
- Add PortWaitStrategy for TCP port availability checking
- Add FileExistsWaitStrategy for filesystem file existence waiting
- Add CompositeWaitStrategy for combining multiple wait conditions
- Include comprehensive unit tests for all new strategies
- Enhanced error messages with actionable hints for debugging
- Maintain backward compatibility with existing LogMessageWaitStrategy
- Fix mypy type annotations for all new wait strategies

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Co-authored-by: David Ankin <[email protected]>

Author: terry-docker