Provide context for Ulfric's stalhrim armor

[ProbablyManuel]

Many players are confused by Ulfric's new stalhrim armor and assume stalhrim is unique to Solstheim. The Dragonborn DLC already alludes Skyrim's kings used to wear stalhrim armor (Deathbrand: "clad in armor of gleaming Stalhrim like the kings of old" ) and ESO expanded on this lore (Crafting Motif 46: Frostcaster Style, The Crown of Freydis).

Expected Outcome

• Add Crafting Motif 46: Frostcaster Style as a note in Ulfric war chamber.
  • The note should have a different title and immediately start with the notes of the scholar.
• Write a note that reveals how Ulfric obtained his stalhrim armor.
  • Random idea: A scout reported multiple possible avenues of stalhrim armor buried in Nordic ruins. This will be a reference to #237
    • Angarvunde (false lead but used to contain a stalhrim armor in earlier versions)
    • Hillgrund's Tomb (Ulfric took this armor for himself)
    • Valthume (actually contains a stalhrim armor)
    • Volskygge (actually contains a stalhrim armor)
• Write another note that connects this to Ulfric's search for Queen Freydis's Sword. (Freydis is the daughter of King Logrolf who owned the Stalhrim clothing in the above note.)
  • Maybe add The Crown of Freydis too