Add debug setup tutorial

Author: Stelllarce

Misc/Tutorials/README.md

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+# How to debug multiple C++ source files in VSCode
+
+[Video tutorial](https://www.youtube.com/watch?v=DVyYnOHP4nY)
+
+## In short:
+
+### :warning: You must put all source files in the same directory for this to work
+
+### :one: Launch the debugger from the main file. This will fail, but it will also create a `launch.json` or `tasks.json` file in the `.vscode` directory
+
+### :two: Edit the config json file to include all source files: in the `args` section search for a line with something like `"${file}"` and replace it with `"${workspaceFolder}/*.cpp"` or simply `"*.cpp"`
+