Add Language model and LanguageController

db/migrate/20231025010204_create_languages.rb

@@ -0,0 +1,9 @@
+class CreateLanguages < ActiveRecord::Migration[7.1]
+  def change
+    create_table :languages do |t|
+      t.string :name
+
+      t.timestamps
+    end
+  end
+end

db/migrate/20231025010226_add_language_fields.rb

@@ -0,0 +1,17 @@
+class AddLanguageFields < ActiveRecord::Migration[7.1]
+  def change
+    create_table :language do |t|
+      t.string :name
+
+      t.timestamps
+    end
+
+    change_table :definitions do |t|
+      t.references :language, null: false, foreign_key: true
+    end
+
+    change_table :part_of_speeches do |t|
+      t.references :language, null: false, foreign_key: true
+    end
+  end
+end