VIS data concept shift

[rbeyer]

Changed the concept of primarily recording PDS-like "products" in the database and data
structures, and changed the concept to capture "records" of various kinds (ImageRecords,
LightRecords, and derived things like PanoRecords) in the database and as the primary
data unit for use and interaction. And then PDS "products" will be made at a later
time via a process that sources one or many records.

Added

• image_records.py (this replaces the concept of raw_products.py)
• create_image.py (this replaces most of the functionality of the previous
  create_raw.py)
• light_records.py which handles information about luminaire state.

Changed

• header.pga_gain_dict structure now has values that are always floats, which helps
  to determine whether this transformation needs to be applied.
• image_stats.py is the new raw_stats.py, supporting ImageRecord objects.
• pano_products.py is now pano_records.py, supporting ImageRecord objects.
• create_pano.py now supports ImageRecords and PanoRecords.
• create_raw.py rearchitected to gather information from "records" to build XML PDS
  labels.
• create_vis_dbs entry point changed to vis_create_dbs to conform with other vis-related
  entry points.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.

Licensing:

This project is released under the LICENSE.

• I claim copyrights on my contributions in this pull request, and I provide those contributions via this pull request under the same license terms that the vipersci project uses, and I have submitted a CLA.

[codecov]

Codecov Report

Patch coverage: 72.69% and project coverage change: +3.68% 🎉

Comparison is base (fe49c24) 60.25% compared to head (79fc07b) 63.94%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #24      +/-   ##
==========================================
+ Coverage   60.25%   63.94%   +3.68%     
==========================================
  Files          34       36       +2     
  Lines        2008     2072      +64     
==========================================
+ Hits         1210     1325     +115     
+ Misses        798      747      -51     

Files Changed	Coverage Δ
src/vipersci/pds/pid.py	91.75% <ø> (+1.09%)	⬆️
src/vipersci/vis/header.py	48.00% <ø> (+8.00%)	⬆️
src/vipersci/vis/create_pano.py	37.89% <55.55%> (ø)
src/vipersci/vis/db/image_records.py	90.51% <66.66%> (ø)
src/vipersci/vis/create_image.py	70.09% <70.09%> (ø)
src/vipersci/vis/pds/create_raw.py	69.82% <70.12%> (+14.56%)	⬆️
src/vipersci/vis/db/light_records.py	89.65% <89.65%> (ø)
src/vipersci/__init__.py	100.00% <100.00%> (ø)
src/vipersci/vis/create_tif.py	100.00% <100.00%> (ø)
src/vipersci/vis/db/create_vis_dbs.py	100.00% <100.00%> (+100.00%)	⬆️
... and 2 more

... and 1 file with indirect coverage changes

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