Read out video annotations during wave analysis

With !5 (merged), both WaveAnalysis and AnnotationTool have been implemented. The next step is to integrate the annotation information into the WaveAnalysis output.

• Read out metadata from video annotations
  • Will need to aggregate information from different sources: calibration video, video metadata, event metadata
  • Implement association of a frame or frame interval with a certain set of metadata
    • Note: Relevant metadata may also be from point events before the actual wave, e.g. a predator attack.
• Expand analyses using information from the metadata
  • Use information like shoal_outline to compute measures like the attack.shoal_overlap
  • …
• Expand output
• Implement simple plots