Deprecate Islamic Prayer Times YAML configuration

[frenck]

Breaking change

The YAML configuration for Islamic Prayer Times is now deprecated. If you have
an existing YAML configuration, it has been imported into the UI automatically
and can be safely removed.

Proposed change

Deprecated the YAML configuration for Islamic Prayer Times, so we can clean it up later.

Type of change

• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)
• New integration (thank you!)
• New feature (which adds functionality to an existing integration)
• Breaking change (fix/feature causing existing functionality to break)
• Code quality improvements to existing code or addition of tests

Additional information

• This PR fixes or closes issue: fixes #
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