Kh/dev/spacing and fonts

[bromiesTM]

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[Copilot]

Pull Request Overview

This PR refactors the IONOS theme implementation by extracting inline CSS into separate organized CSS files and adding custom font support. The main changes improve code maintainability by separating concerns and enhance the theme with OpenSans font integration.

• Extracts hardcoded CSS from PHP into separate CSS files organized by functionality (variables, sidebar, files, layout)
• Adds OpenSans font support with multiple font weights and formats
• Updates font-face configuration and CSS variable definitions

Reviewed Changes

Copilot reviewed 5 out of 20 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
apps/theming/lib/Themes/IonosTheme.php	Refactored to load CSS from external files and added OpenSans font integration
apps/theming/css/ionos/variables.css	New file containing CSS custom properties for IONOS theme styling
apps/theming/css/ionos/sidebar.css	New file containing sidebar-specific styling rules
apps/theming/css/ionos/files.css	New file containing file list and dialog styling rules
apps/theming/css/ionos/_layout.css	New file containing header and layout styling rules

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[printminion-co]

please add "IONOS" as commit prefix

lets do some refactorings #8

[tanyaka]

Applied the feedback and adapted the refacroring of #8 in #10

[tanyaka]

Closed in favor of #10