Add gdb tui to list of debugger interfaces.

Author: hageboeck

Diff for: talk/tools/debugging.tex

@@ -76,6 +76,7 @@
       \item windows for variables, breakpoints, call stack, active threads, watch variables in-code, disassembly, run to cursor ...
     \end{itemize}
     \begin{description}
+      \item[Native gdb] Try ``tui enable'' for a simple built-in UI
       \item[\href{https://code.visualstudio.com/docs/cpp/cpp-debug}{\beamergotobutton{VSCode}}]
         Built-in support for gdb
       \item[\href{https://marketplace.visualstudio.com/items?itemName=vadimcn.vscode-lldb}{\beamergotobutton{CodeLLDB}}]