Added myself to the CODE_OWNERS.txt list for a few subsystems.

I'm primarily testing my git-svn setup.

git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@252441 91177308-0d34-0410-b5e6-96231b3b80d8

CODE_OWNERS.txt

@@ -52,3 +52,8 @@ D: CMake build, Host (common+windows), Plugins/Process/Windows, Anything Windows
 N: Oleksiy Vyalov
 E: ovyalov@google.com
 D: Linux, Android
+
+N: Todd Fiala
+E: todd.fiala@gmail.com
+D: Test Suite subsystems (concurrent test runners, test events, TestResults system), gdb-remote protocol tests
+