add everything to manage reputations

db/migrate/20210430163754_create_wow_reputation_tiers.rb

@@ -0,0 +1,12 @@
+class CreateWowReputationTiers < ActiveRecord::Migration[6.1]
+  def change
+    create_table :wow_reputation_tiers do |t|
+      t.string :href
+      t.integer :reputation_tier_id, null: false
+
+      t.timestamps
+    end
+
+    add_index :wow_reputation_tiers, :reputation_tier_id, unique: true
+  end
+end