Annotation Viewer/Editor

[BryonLewis]

Client-side annotation viewer/editor implementation

TODO:

• Add SpectroInfo properties to the spectrogram endpoint. This provides the width/height of the image plus the start/end points for the time and the frequencies. Also may want to include the freq scale for rendering the annotations differently in the future. For now lets just go with a standard linear scale.
• Implement API calls for getting annotations from the server, this includes the GET/PUT/PATCH endpoints. Possible the DELETE endpoint as well
• testing and drawing of a simple annotation on the image utilizing the new LayerManager and Rectangle Layer. Create a simple sample annotation and ensure it can be drawn on the image and viewed properly.
• Implement the callback events for selecting annotations and editing annotations.

Update 20240110:
Going to merge as is (with the stubbing out of the EditAnnotations) so that we have something for rebasing for adding the spectrogram.

I'll move remaining tasks into a new PR.

[BryonLewis]

Having an issue where I can draw an annotation fill but can draw an outline for some reason. Not sure what is happening with it.