Optimizations, closes #1070

[Teranis]

• updated RP to
  • Cache centroids
  • Estimate centroids based on bbox if exact is not important
  • Ability to update only the cutout of the entire lab (GUI can use bbox of "old" obj before change, current view or custom bbox
    • handles border touching correctly (ignore if specific IDs are provided and not part of it, otherwise label them with mask)
  • Apply assignment changes (Just ID swaps, for example, from tracker) and avoid recomputing RP altogether
  • Apply deletions (similar to assignments)
• updated CellACDC trackers to
  • return assignments for real-time tracking
  • Handle tracking for only a subset of IDs inside the tracker itself
• updated GUI:
  • Integration of new RP functionality
  • Left some comments to review together with @ElpadoCan
  • Updated swapping and assigning IDs to use RP (merge safe!)
  • Clear border uses its own implementation
  • Set Lost centroids now look for the closest pixel with the correct ID
  • Loading optimisation from acdc_df (minor, but nice for 3D)
  • Segm metadata, loading of data if applicable
• Updated debugutils to have a line benchmark decorator for nice execution time stats
• Drawing missing IDs now uses bulk, significant speedup and memory save for many new obj

Questions:
Is update_rp always called? Also, when modifying unvisited frames?