This can be used for binary size comparisons over time. Build type
is now more granular (editor, debug template, release template) as
this will be needed for fair binary size comparisons.
- Automatically register benchmarks based on `.tscn` files found in the
`benchmarks/` folder.
- `manager.gd` no longer needs to be edited every time a benchmark is added.
- Use full path for include/exclude glob instead of just the last category's name.
- Move benchmarks to a subfolder.
- Position the benchmark label away from the window's edges for better readability,
and increase its outline size.
- Run the dynamic light cull with shadows benchmark
(there was a `.tscn` file but it was unused).