[Trinkets] Add tank trinkets to tank specializations

[Melekus]

Add the following trinkets to the tank specializations :

• Diima's Glacial Aegis
• Smoldering Titanguard
• Riftworld Codex
• Aggramar's Conviction
• Leviathan's Hunger Maybe also add the other tanking trinkets, but their only dps gain are from the stats they hold :
• Feverish Carapace
• Apocalypse Drive
• Reliquary of the Damned (pure stam, should be +0 dps)
• Eye of Fharg / Shatug

Could also add them to the trinket charts of the specialization that share their class with a tank spec (UH/Frost DK, Ret pally, Arms/Fury Warrior, WW Monk, Havoc DH, Feral Druid)

[aethys256]

👍 We are currently thinking about a good way to implement multiple-roles trinket.