Week 10 king minimum ordering

[wifiBlack]

Changes proposed in this pull request:

• Expanded documentation for pgr_kingOrdering and pgr_minDegreeOrdering:
  • Added detailed descriptions, algorithm characteristics, and complexity notes.
  • Included example queries with sample data and expected results.
  • Added Graphviz diagrams to illustrate execution flow.
• Internally refactored ordering algorithm implementation:
  • Unified internal types to match G::V for consistency.
  • Made degree precomputation explicit for clarity.

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