Add frient A/S Smart Button (SBTZB-110) v2.0.4 (#84)

* Add OTA files from issue #83

OTA File Submission

File Information
- Filename: 1015-0391-00020004_748757.ota
- Original Filename: SmartButton_2.0.4.zigbee
- Manufacturer Directory: develco
- Manufacturer ID: 0x1015 (4117)
- Image Type: 0x0391 (913)
- File Version: 0x00020004 (131076)
- File Size: 209,338 bytes
- Header String: PanicButton
- Hosting: Repository file (hosted in zigpy-ota)
- Existing Images Handling: Keep all existing images
- Tested on Device: Yes

Metadata
- Source URL: https://raw.githubusercontent.com/Develco-Products/frient_upgrade_images/main/SmartButton_2.0.4.zigbee

Release Notes
This updates the frient A/S Smart Button (SBTZB-110) to v2.0.4.

Changes
- Battery measurement improvements

Closes: #83
Co-authored-by: GAFfrient <96058156+GAFfrient@users.noreply.github.com>

* Add PR number to YAML metadata

---------

Co-authored-by: GAFfrient <96058156+GAFfrient@users.noreply.github.com>

Author: zigpy-bot

images/develco/1015-0391-00020004_748757.ota

@@ -0,0 +1,10 @@
+# OTA metadata
+file_name: 1015-0391-00020004_748757.ota
+source_file_name: SmartButton_2.0.4.zigbee
+source_url: https://raw.githubusercontent.com/Develco-Products/frient_upgrade_images/main/SmartButton_2.0.4.zigbee
+pull_request: 84
+release_notes: |-
+  This updates the frient A/S Smart Button (SBTZB-110) to v2.0.4.
+
+  **Changes**
+  - Battery measurement improvements