Change hashtag trends to be stored in the database instead of redis (#32837)

Co-authored-by: David Roetzel <david@roetzel.de>

db/migrate/20241111141355_create_tag_trends.rb

@@ -0,0 +1,15 @@
+# frozen_string_literal: true
+
+class CreateTagTrends < ActiveRecord::Migration[7.2]
+  def change
+    create_table :tag_trends do |t| # rubocop:disable Rails/CreateTableWithTimestamps
+      t.references :tag, null: false, foreign_key: { on_delete: :cascade }, index: false
+      t.float :score, null: false, default: 0
+      t.integer :rank, null: false, default: 0
+      t.boolean :allowed, null: false, default: false
+      t.string :language, null: false, default: ''
+    end
+
+    add_index :tag_trends, [:tag_id, :language], unique: true
+  end
+end