fix: missing imports error on HA 2026.5.0 (#224)

* Fix import error on HA 2026.5.0 (hassio constants moved to const submodule)

HA 2026.5.0 removed ATTR_FOLDERS, ATTR_ADDONS, ATTR_PASSWORD, and
ATTR_HOMEASSISTANT_EXCLUDE_DATABASE from homeassistant.components.hassio.
These constants still exist in homeassistant.components.hassio.const.

Change the import source in __init__.py, manager.py, and handlers.py
from homeassistant.components.hassio to homeassistant.components.hassio.const.

Fixes #221, #222, #223

* Add backwards-compatible import fallback for HA < 2026.5

Use try/except to import hassio constants from the new location
(hassio.const) with a fallback to hassio.__init__ for older HA versions.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

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Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>

ci: fix release workflow

ci: update release workflow

feat: add `encrypted` option for default backup encryption (#186)

docs: add video link to overview

fix: replace deprecated `is_hassio` method in HA 2024.11 (#165)

Fixes: #163, #158

fix: async timeout does not support context manager error (#164)

Fixes: #159

docs: update service exclude descriptions (#156)

* Correct descriptions in services.yaml (exclude)

* Additional update

feat: add urdu translations (#120)

* Create ur.json

added Urdu translation

* Update ur.json

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Co-authored-by: Josh Willox <joshwillox@gmail.com>

refactor: un-deprecate `download_path` option

Enough people are using this, so we'll keep this feature for now.

This reverts commit 6354f9f.