NodeInfo

Gathering output intelligence
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- Added Shift-expanded gathering result information for Herbalism, Mining, and
  Skinning.
- Normal tooltips remain compact; holding Shift reveals Contains, Likely, and
  Rare result lines and releasing Shift collapses them immediately.
- Added yield coverage for every Herbalism and Mining node already recognized
  by nodeInfo, including Classic and Burning Crusade nodes.
- Mining output includes primary ore, common stone/motes, and node-appropriate
  rare gems or specialty materials.
- Herbalism output includes the primary herb plus known secondary gathers such
  as Swiftthistle, Wildvine, Motes, Nightmare Seed, Fel Blossom, and Fel Lotus.
- Skinning output uses creature level for Classic leather/hide expectations and
  Outland-aware Knothide results, with conservative specialty material hints
  for matching creature families/names.
- Long rare-result lists automatically wrap across multiple tooltip lines.
- Added nodeInfo_YieldData.lua so gathering-output data can be maintained
  independently from the core tooltip logic.