ESPhome-addon update device procedure

**Describe the problem you have/What new integration you would like**

An „UPDATE ALL“ Button to update all ESPhome devices at once using the ESPhome addon.

**Please describe your use case for this integration and alternatives you've tried:**

So far, upon a new ESPhome-version you have to klick „Update“ for each device separately. For me, with 42 devices, this leads to an index finger cramp… ;)

**Additional context**

The request is for an “UPDATE ALL” button in the ESPHome addon, replacing the need to update 42 devices individually. Start by locating the addon’s device-update interface and determine how a batch action would be defined. Done means users can initiate updates for all ESPHome devices through one action.

Written by the indexing model from the issue text.