Add S3 integration (#139325)

* Add S3 integration

* Improve translations and error handling

* Test S3 integration

* Update QoS

* Add missing data_description strings

* Fix missing async_initialize_backup in tests

* PR changes

* Remove unique ID, rely on abort_entries_match

* Raise only BackupAgentError (#139754), introduce decorator for error handling

* Switch to metadata-file based solution

* PR changes

* Revert strict typing

* Bump dependency

* Silence mypy

* Pass docs URLs as description_placeholders

* PR changes

* Rename _api to api

* PR Changes

* PR Changes 2

* Remove api abstraction

* Handle S3 multipart upload size limitations

* PR changes

homeassistant/generated/config_flows.py

@@ -541,6 +541,7 @@ FLOWS = {
         "ruuvi_gateway",
         "ruuvitag_ble",
         "rympro",
+        "s3",
         "sabnzbd",
         "samsungtv",
         "sanix",