Online-Kapitel: Direktiven (#91)

* Online-Kapitel: Direktiven

* Update material/directives/README.md

Co-authored-by: Ferdinand Malcher <ferdinand@malcher.media>

* Update material/directives/README.md

Co-authored-by: Ferdinand Malcher <ferdinand@malcher.media>

* typo

* docs(material/directives): Remove section on requesting components and directives

- Remove outdated section "Komponenten und Direktiven anfordern" (54 lines)
- Remove example code demonstrating component/directive injection pattern
- Remove TableAdapterDirective implementation example
- Streamline documentation to focus on current best practices
- Section content moved to separate resource or deprecated in favor of modern patterns

* makeover

* docs(material/directives): Update publication and modification dates

- Update published date from 2026-04-24 to 2026-04-25
- Update lastModified date from 2026-04-24 to 2026-04-25

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Co-authored-by: Ferdinand Malcher <ferdinand@malcher.media>

Author: d-koppenhagen