Add Storybook 7 Migration Summary

storybook-migration-summary.md

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+# Storybook 7 Migration Summary
+
+## Upgrade Storybook packages
+
+The following command was ran to upgrade the Storybook packages:
+
+```bash
+npx storybook@latest upgrade
+```
+
+## Your `.storybook/main.js|ts` files were prepared for Storybook's automigration scripts
+
+Some adjustments were made to your `.storybook/main.js|ts` files so that
+the Storybook automigration scripts could run successfully. The changes that were made are as follows:
+
+- Remove the `as StorybookConfig` typecast from the main.ts files, if any,
+  since it is not needed any more.
+- Remove the `path.resolve` calls from the Next.js Storybook configuration, if any, since it breaks the Storybook automigration scripts.
+
+## The Storybook automigration scripts were ran
+
+### Some migrations failed
+
+The following commands failed and your Storybook configuration for these projects was not
+migrated to the latest version 7:
+
+- `npx storybook@latest automigrate --config-dir libs/ui/.storybook --renderer @storybook/angular`
+
+You can run these commands again, manually, and follow the instructions in the
+output of these commands to migrate your Storybook configuration to the latest version 7.
+
+Also, we may have missed something. Please make sure to check the logs of the Storybook CLI commands that were run, and look for
+the `❌ Failed trying to evaluate` message or `❌ The migration failed to update` message. This will indicate if a command was
+unsuccessful, and will help you run the migration again, manually.
+
+## Final adjustments
+
+After the Storybook automigration scripts have run, some additional adjustments were made to your
+workspace, to make sure that everything is working as expected. These adjustments are as follows:
+
+- The `vite-tsconfig-paths` plugin was removed from the Storybook configuration files since it's no longer needed.
+- The `viteConfigPath` option was added to the Storybook builder, where needed.
+- The import package for the `StorybookConfig` type was changed to be framework specific.
+- The `uiFramework` option was removed from your project's Storybook targets.
+- The `lit` package was added to your workspace, if you are using the
+  Web Components `@storybook/web-components` package. Please note that the `lit-html` package is
+  no longer needed by Storybook v7. So, if you are not using it anywhere else, you can safely remove it.
+
+## Next steps
+
+You can make sure everything is working as expected by trying
+to build or serve your Storybook as you normally would.
+
+```bash
+npx nx build-storybook project-name
+```
+
+```bash
+npx nx storybook project-name
+```
+
+Please read the [Storybook 7.0.0 release article](https://storybook.js.org/blog/storybook-7-0/) and the
+official [Storybook 7.0.0 migration guide](https://storybook.js.org/docs/react/migration-guide)
+for more information.
+
+You can also read the docs for the [@nx/storybook:migrate-7 generator](https://nx.dev/packages/storybook/generators/migrate-7) and our [Storybook 7 setup guide](https://nx.dev/packages/storybook/documents/storybook-7-setup).