fix(migrate): add README

packages/amplify-migration/README.md

@@ -0,0 +1,11 @@
+## Usage
+
+### Codegen
+
+In Gen1 root directory run the following to generate Gen2 code based on Gen1 configuration:
+
+`npx @aws-amplify/migrate to-gen-2 generate-code`
+
+Once this command runs successfully, the Gen1 project is converted to Gen2 with `amplify` directory containing Gen2 code and `.amplify/migration/amplify` containing Gen1 configuration.
+
+

packages/amplify-migration/src/commands/gen2/generate-templates/generate_templates_command.ts

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+import { Argv, CommandModule } from 'yargs';
+// import { execute, generateTemplates } from '../../../';
+
+export type Gen2GenerateTemplatesCommandOptions = Record<string, never>;
+
+/**
+ * Command that generates CloudFormation templates needed for stack refactor operation to move resources from Gen1 to Gen2.
+ */
+export class Gen2GenerateTemplatesCommand implements CommandModule<object, Gen2GenerateTemplatesCommandOptions> {
+  /**
+   * @inheritDoc
+   */
+  readonly command: string;
+
+  /**
+   * @inheritDoc
+   */
+  readonly describe: string;
+
+  constructor() {
+    this.command = 'generate-templates';
+    this.describe = 'Generates stack refactor inputs (CFN templates) to move Gen1 resources to Gen2 applications.';
+  }
+
+  builder = (yargs: Argv): Argv => {
+    return yargs.version(false);
+  };
+  handler = async (): Promise<void> => {
+    // await generateTemplates();
+  };
+}