feat: add NimmerSky modlist foundation

- Visions of Vaermina reference list parsed into sections
- Community Shaders guide with PGPatcher setup
- Body/animation stack documentation
- CSV/ODS tracking spreadsheets

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

sections/OStim.txt

@@ -0,0 +1,19 @@
+-Mjoll Replacer by AlenVex
+-Jordis Replacer
+-Lydia Replacer
+-Nyr Saadia Replacer
+-Nyr Iona Replacer
+-Nyr Endarie Replacer
+-Nyr Elisif Replacer
+-Nyr Brelyna Maryon
+-Nyrified Winterhold Hold
+-Nyrified Whiterun Hold
+-Nyrified The Reach Hold
+-Nyrified Riverwood
+-Nyrified Hjaalmarch Hold
+-Nyrified Falkreath
+-ColdSun's NPCs - Update
+-ColdSun's Visions - NPCs AIO
+-Children of the Pariah - An Orc NPC Overhaul
+-Lalup's NPCs - Creation Club
+-Children of the Hist - An Argonian NPC Overhaul