pattern: Active-Object pattern. (#1660)

* Closes #65.

* Removed

* Removed unnecessary files. Added logging. Closes Fixes #1660.

* Added Terminition condition.

* Logger implemented. Removed maven wrapper.

* Added module to parent POM. removed .gitignore

* Replaced tabs with whitespaces, added Javadocs.

* Fixed more whitespaces problems.

* Fixed more checkstyle errors

* More checkstyle errors.

* Checkstyle errors.

* Final checkstyle cleanup

* Added UML file. Changed System.exit() to Runtime.

* Changed buisiness logic and readme.md file

* Changed typos and readme.md file

* Fixed checkstyle errors

* Fixed grammer errors and CircleCI bugs.

* Wrong readme.md

* Added Thread.interrupt() for after catching exception.

* Fixed SonarCloud code smells.

* Removed unused brackets.

* Changed main program exit logic. Added tests.

* Reverted abstract-factory

* Cleaned code

* Added static to loggers. cleaned code smells.

* Checkstyle errors.

* Code Smells.

Co-authored-by: Subhrodip Mohanta <hello@subho.xyz>

active-object/etc/active-object.urm.puml

@@ -0,0 +1,25 @@
+@startuml
+package com.iluwatar.activeobject {
+  abstract class ActiveCreature {
+    - logger : Logger
+    - name : String
+    - requests : BlockingQueue<Runnable>
+    - thread : Thread
+    + ActiveCreature(name : String)
+    + eat()
+    + name() : String
+    + roam()
+  }
+  class App {
+    - creatures : Integer
+    - logger : Logger
+    + App()
+    + main(args : String[]) {static}
+    + run()
+  }
+  class Orc {
+    + Orc(name : String)
+  }
+}
+Orc --|> ActiveCreature 
+@enduml