Release 1.1.0: async/thread propagation, MDC, cross-service tracing o…

[Fayupable]

…ver Kafka/RabbitMQ/HTTP

• Add FlowContextPropagatingExecutor / FlowContextTaskDecorator for call-chain propagation across thread hand-offs, including virtual threads and @async
• Detect CompletableFuture return types and record duration/outcome on completion instead of submission
• Add MDC structured logging (LoggedMdcKeys, MdcPropagation, MdcContextPropagation)
• Add RequestAttributes/SecurityContext propagating executors and task decorators for caller-identity continuity across thread hand-offs
• Add cross-service trace propagation over Kafka and RabbitMQ headers (KafkaTraceHeaderCarrier, RabbitTraceHeaderCarrier) via a new public FlowContextCarrier facade
• Add cross-service trace propagation over HTTP (RestTemplate, Feign, WebClient, inbound servlet filter) via HttpTraceHeaderCarrier
• Reject @Logged methods returning a reactive Publisher at startup instead of silently mismeasuring an unsubscribed pipeline
• Validate incoming trace ids against this library's own format across all three carriers (HTTP/Kafka/RabbitMQ) to close a log-forgery/CRLF injection vector; document the remaining, unavoidable trust-boundary risk (a well-formed but spoofed trace id) in the README
• Fix className resolution to report the concrete target class instead of the proxied interface; cache class/method name resolution per invocation site
• Fix LoggedAspect to restore MDC and close the flow scope from a single finally block, so an Error from a collaborator no longer skips cleanup
• Fix LoggedTargetGuardBeanPostProcessor to walk the superclass chain when checking for @Logged methods
• Fix LazyMetricsRecorder to stop permanently caching a "no MeterRegistry" outcome
• Clamp EmissionPolicy sample rate to [0.0, 1.0]

Bumps version to 1.1.0.