Tagging system, autoplot, and benchmark helpers for work-precision diagrams

[ChrisRackauckas-Claude]

Migrated from SciML/DiffEqDevTools.jl#177.

Feature request for infrastructure improvements to DiffEqDevTools (now at lib/DiffEqDevTools):

1. Core tagging — Add tags::Vector{Symbol} to WorkPrecision for family-based filtering (e.g. :rosenbrock, :bdf, :5th_order)
2. Multi-error-mode — Compute multiple error metrics (:final, :l2, :L2) in one pass
3. Tag-based plotting — plot(wp_set, tags=[:rosenbrock]) with reference method overlays
4. Best-of-family — Auto-identify Pareto-efficient methods per family for cross-family comparisons
5. Time cutoff — Timeout for slow methods via Distributed workers or callbacks
6. AutoDiff comparison — Automatically create AD vs no-AD variants
7. Autoplot — Single function to generate all standard comparison plots
8. Interactive Plotly — Hover/click support for dense comparison diagrams
9. SciMLBenchmarks migration — Replace manual boilerplate with tag-based infrastructure

See the original issue for full design details including API examples, implementation phases, and design constraints.