feat: Initial implementation of SharePoint upload

Add docs

Author: blefebvre

README.md

@@ -42,7 +42,28 @@ npm run import -- --urls tools/importer/urls.txt --importjs tools/importer/impor
 The `import.js` file you provide will be automatically bundled and sent to the Import as a Service API, so referencing
 other local scripts (such as transformers) is supported.
 
-Once complete, a pre-signed URL to download the import result (as a .zip archive) from S3 will be printed to the console. 
+Once complete, a pre-signed URL to download the import result (as a .zip archive) from S3 will be printed to the console.
+
+#### SharePoint upload
+
+Optionally, the [m365 CLI](https://pnp.github.io/cli-microsoft365/) can be installed and configured to upload the import result to SharePoint.
+You will need your `tenantId` and the `clientId` of a [Microsoft Entra application](https://pnp.github.io/cli-microsoft365/user-guide/using-own-identity/) (on your SharePoint) to setup the CLI:
+
+```
+m365 setup
+m365 login
+```
+
+Copy a link from SharePoint to the directory you'd like to upload to. This can be done from the SharePoint web UI, via the "Copy link" button.
+Your new link should take the following form: `https://example.sharepoint.com/:f:/r/sites/example/Shared%20Documents/destination-directory`
+
+Once logged in to SharePoint with the `m365` CLI, pass the SharePoint link as a param to the aem-import-helper:
+
+```
+npm run import -- --urls urls.txt --sharepointurl https://example.sharepoint.com/:f:/r/sites/example/Shared%20Documents/destination-directory
+```
+
+Once the import job is complete, the import result will be downloaded from S3, extracted, and each document will be uploaded to the specified SharePoint directory.
 
 ### Bundle