Add 'custGeom' to ShapeTypes

I'd love to see 'custGeom' added to the ShapeType in type definitions, so I can add custom geometries without having to ts issues.

Issue Category

[x] Enhancement
[ ] Bug
[ ] Question
[ ] Documentation gap/issue

Product Versions

Please specify what version of the library you are using......: [ 3.12.0 ]
Please specify what version(s) of PowerPoint you are targeting: [ 16.82 ]
Please specify what web browser you are using.................: [ chrome ]

Desired Behavior

I want to do something like this slide.addShape(pptx.ShapeType.custGeom, { line: { color: "00FF66", width: 1 }, points: [ { x: 2, y: 2 }, { x: 2, y: 3, curve: { type: "quadratic", x1: 2.5, y1: 2.5 } }, ], });

Which works perfectly! Only custGeom is not defined in the type definitions, so typescript will complain about it.

Observed Behavior

Obeserved Behavior is properly functioning Custom Geometry, while typescript complains that it doesn't know custGeom / CUSTOM_GEOMETRY.

Steps to Reproduce

I added the type locally in a new branch, but I don't have the rights to push it. Happy to push it and make a pr if you can add permissions for me to do so, otherwise here is the diff (but maybe I'm missing something? This fixes the issue for me locally at least).

gitbrent / PptxGenJS