Misc: Add lldb pretty print script

[HolonProduction]

Supports:

• String (summary string in the format "hello world")
• StringName (summary string in the format &"hello world"
• List (synthetic children for indexed children access + summary string in the format 2 items
• HashMap (synthetic children for indexed children access (to the KeyValues) + summary string in the format 2 items)
• Vector (synthetic children for indexed children access + summary string in the format 2 items)

[fire]

See also ~~https://github.com/nikitalita/lldb-qt-formatters~~ from @nikitalita

https://github.com/nikitalita/lldb-qt-formatters/blob/godot/GodotFormatters.py

[HolonProduction]

https://github.com/nikitalita/lldb-qt-formatters/blob/godot/GodotFormatters.py

That's definitely more elaborate then what I came up with. I still think a minimal pretty printer in our repo would be nice, but if this is closed in favor of existing stuff we should link to it in some way.

[fire]

I would prefer a Godot Engine integration because this is not a trivial script to write for lldb support.

[nikitalita]

See also ~https://github.com/nikitalita/lldb-qt-formatters~ from @nikitalita

https://github.com/nikitalita/lldb-qt-formatters/blob/godot/GodotFormatters.py

That's actually old, the most current one resides here: https://github.com/nikitalita/GodotFormatters

I should note that this isn't quite ready for prime-time. I keep getting hangs when loading a frame that has a bunch of complex variables, and I am unable to track it down due to the lack of debugging for lldb scripts. If anyone wants to take this and run with it, be my guest.