initial rewrite

[drernie]

Description

Reorganize the SUMMARY document to:

1. Refactor content by use case
2. Prioritize Catalog user documentation over developer APIs
3. Match our new product terminology

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 38.16%. Comparing base (fb3a344) to head (7bd14a9).

Additional details and impacted files

@@           Coverage Diff            @@
##           master    #4149    +/-   ##
========================================
  Coverage   38.16%   38.16%            
========================================
  Files         725      725            
  Lines       33505    33505            
  Branches     4960     4782   -178     
========================================
  Hits        12786    12786            
- Misses      19551    20095   +544     
+ Partials     1168      624   -544     

Flag	Coverage Δ
api-python	90.85% <ø> (ø)
catalog	11.32% <ø> (ø)
lambda	87.95% <ø> (ø)

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[drernie]

The goal of this PR is simply to fix the SUMMARY without changing the content.
Cleaning up the actual documents to align with this new structure is a follow-on task (suggestions welcome).

[QuiltSimon]

Looks like the recommendation we put together. Looks good to me.