Add models and rake tasks for migrating

db/migrations/0001_create_models_table.rb

@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+Sequel.migration do
+  change do
+    create_table(:models) do
+      primary_key :id
+      String :name, null: false
+      String :run_command, null: false, unique: true
+      String :reputation, text: true
+      Integer :context_length
+      Integer :parameters
+      Float :prompt_rate
+      Float :eval_rate
+      String :capabilities
+      String :test_results
+      DateTime :created_at, null: false
+    end
+  end
+end