feat: add Microservices Bulkhead pattern (#3228) (#3597)

* feat: add Microservices Bulkhead pattern (#3228)

* fix: cancel queued calls on bulkhead shutdown

Shutdown now cancels the queued futures so callers do not hang, a shutdown racing a submit is no longer counted as a rejection, and interrupted inventory checks are logged. The class diagram is a rendered PNG.

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Co-authored-by: Ilkka Seppälä <iluwatar@users.noreply.github.com>

pom.xml

@@ -260,6 +260,7 @@
     <module>rate-limiting-pattern</module>
     <module>fallback</module>
     <module>onion-architecture</module>
+    <module>microservices-bulkhead</module>
     <module>microservices-load-shedding</module>
   </modules>
   <repositories>