Handle Battery CC notifications

[raman325]

Adds support for Battery CC notifications

I noticed we don't convert Entry Control and Notification CC notification values to enums (EntryControlEventType, EntryControlDataType, NotificationType, NotificationEvent) and just pass the raw ints. zwave-js provides the corresponding label attributes in the event automatically, so I guess this is OK, but it creates some inconsistency in what we convert to a Python friendly model and what we don't.

If we did convert those values to enums, we'd have to figure out how to handle unrecognized enums so that we don't destroy data in the event (e.g. right now our strategy is to return the UNKNOWN value for enums that support it which is -1. If we were to replace an integer value that is unrecognized, it would get serialized as -1 when the event gets emitted by HA).

[Copilot]

Pull request overview

This PR adds support for Battery CC notifications and updates existing notification handlers to use strongly-typed enums instead of raw integers. The changes improve type safety and code maintainability by replacing integer fields with enum types throughout the notification system.

Changes:

• Adds new BatteryNotification class with enums for event types and urgency levels
• Converts notification field types from integers/strings to enums (EntryControlEventType, NotificationType, NotificationEvent, MultilevelSwitchStartLevelChangeDirection)
• Updates notification handler to include Battery CC and reorders cases alphabetically for better maintainability

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
zwave_js_server/const/command_class/battery.py	Adds new enum constants for Battery CC notification events and replacement status
zwave_js_server/const/command_class/multilevel_switch.py	Adds MultilevelSwitchStartLevelChangeDirection enum for direction values
zwave_js_server/model/notification.py	Adds BatteryNotification class, updates existing notifications to use enum types, fixes direction field default value
zwave_js_server/model/node/init.py	Adds Battery CC case to notification handler, reorders cases alphabetically
test/model/test_node.py	Adds Battery CC notification test, updates existing tests to assert enum values, uses raw integers for ccId in test data

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[MartinHjelmare]

Thanks!

If you're looking for easy fixes around notifications, these comments would be nice to address:

zwave-js/backlog#139 (comment)