[Feature Request] add name:'.....' to objects

[Offbeatmammal]

when creating an object the name always defaults to "object n" and allocates n sequentially.

it would be a handy option to be able to override the default name with eg:

slide.addShape(
  pptx.ShapeType.hexagon,
  {shape_name:'myHex01', x:0.33, y: 4.51, w: 1.6, h: 1.4, rotate: 270, fill:{ type:'solid', color:'DE1D16' }}
)

[gitbrent]

Feature added:

slide.addShape(
  pptx.shapes.RIGHT_TRIANGLE,
  { x: 0.4, y: 4.3, w: 6.0, h: 3.0, shapeName:'First Right Triangle' }
);