Add assist action and built-in hass-action

[piitaya]

Description

These features requires 2023.7 ha version.

This PR replaces custom actions by the built-in hass-action event.

This will improve some things :

• allow to open assist from mushroom card
• use ha dialog instead of browser popup for confirmations

Related Issue

This PR fixes or closes issue: fixes #541, fixes #1109

Motivation and Context

How Has This Been Tested

Types of changes

• 🐛 Bug fix (non-breaking change which fixes an issue)
• 🚀 New feature (non-breaking change which adds functionality)
• 🌎 Translation (addition or update a translation)
• ⚠️ Breaking change (fix or feature that would cause existing functionality to change)

Checklist

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have tested the change locally.
• I followed the steps if I add a new language .