[cpp-qt-client] Add cpp-qt-client technical committee to CODEOWNERS (#17481)

Author: MartinDelille

.github/CODEOWNERS

@@ -28,6 +28,14 @@ modules/openapi-generator-cli/**/* @jimschubert
 modules/openapi-generator-gradle-plugin/**/* @jimschubert
 modules/openapi-generator-maven-plugin/**/* @jimschubert
 
-# Martin Delille
+# cpp-qt-client technical committee
+modules/openapi-generator/src/main/resources/cpp-qt-client/**/* @ravinikam
+samples/client/petstore/cpp-qt/**/* @ravinikam
+modules/openapi-generator/src/main/resources/cpp-qt-client/**/* @stkrwork
+samples/client/petstore/cpp-qt/**/* @stkrwork
+modules/openapi-generator/src/main/resources/cpp-qt-client/**/* @etherealjoy
+samples/client/petstore/cpp-qt/**/* @etherealjoy
 modules/openapi-generator/src/main/resources/cpp-qt-client/**/* @martindelille
 samples/client/petstore/cpp-qt/**/* @martindelille
+modules/openapi-generator/src/main/resources/cpp-qt-client/**/* @muttleyxd
+samples/client/petstore/cpp-qt/**/* @muttleyxd