fix: Add specific library codeowner

Author: AlejandroFernandezLuces

.github/CODEOWNERS

@@ -4,4 +4,7 @@
 # These owners will be the default owners for everything in
 # the repo. Unless a later match takes precedence,
 # they will be requested for review when someone opens a pull request.
-* @ansys-internal/ansys-common-tools-maintainers
+* @ansys-internal/ansys-common-tools-maintainers
+
+# Local launcher
+/src/ansys/common/tools/launcher/* @greschd