handle chip and chip values operations

db/migrate/20200827113649_create_chips.rb

@@ -0,0 +1,12 @@
+class CreateChips < ActiveRecord::Migration[5.2]
+  def change
+    create_table :chips do |t|
+      t.text :name, null: false
+      t.text :symbol, null: false
+      t.boolean :enabled, default: true
+      t.timestamps
+    end
+
+    add_index :chips, :name, unique: true
+  end
+end