Create Readout model

db/migrate/20250121230456_create_readouts.rb

@@ -0,0 +1,15 @@
+class CreateReadouts < ActiveRecord::Migration[7.2]
+  def change
+    create_table :readouts do |t|
+      t.references :user, null: false, foreign_key: true
+      t.references :quantity, null: false, foreign_key: true
+      t.references :unit, foreign_key: true
+      t.decimal :value, null: false, precision: 30, scale: 15
+      #t.references :collector, foreign_key: true
+      #t.references :device, foreign_key: true
+
+      t.timestamps null: false
+    end
+    add_index :readouts, [:quantity_id, :created_at], unique: true
+  end
+end