IVGCVSW-4618 'Transition Units Test Suites'

* Moved doctest third-party library to armnn from delegate.
  License file is added.

Signed-off-by: Sadik Armagan <sadik.armagan@arm.com>
Change-Id: I4257c492ffd1c2d1b695ae4fc3ae70432acbaded
diff --git a/delegate/CMakeLists.txt b/delegate/CMakeLists.txt
index fea07b3..707877f 100644
--- a/delegate/CMakeLists.txt
+++ b/delegate/CMakeLists.txt
@@ -203,7 +203,6 @@
         endif()
 
     add_executable(DelegateUnitTests ${armnnDelegate_unittest_sources})
-    target_include_directories(DelegateUnitTests PRIVATE third-party)
 
     # Add half library from armnn third-party libraries
     target_link_libraries(DelegateUnitTests PRIVATE thirdparty_headers)
diff --git a/delegate/third-party/doctest/LICENSE.txt b/third-party/doctest/LICENSE.txt
similarity index 100%
rename from delegate/third-party/doctest/LICENSE.txt
rename to third-party/doctest/LICENSE.txt
diff --git a/delegate/third-party/doctest/doctest.h b/third-party/doctest/doctest.h
similarity index 100%
rename from delegate/third-party/doctest/doctest.h
rename to third-party/doctest/doctest.h