feat: ajout de plugins revealjs supplémentaires

public/presentation-docinfo-footer.html

public/presentation.adoc

public/revealjs-plugins/animate/README.md

public/revealjs-plugins/animate/plugin.js

public/revealjs-plugins/animate/svg.min.js

public/revealjs-plugins/anything/README.md

public/revealjs-plugins/anything/plugin.js

public/revealjs-plugins/audio-slideshow/README.md

public/revealjs-plugins/audio-slideshow/RecordRTC.js

public/revealjs-plugins/audio-slideshow/plugin.js

public/revealjs-plugins/audio-slideshow/recorder.js

public/revealjs-plugins/chalkboard/README.md

public/revealjs-plugins/chalkboard/img/blackboard.png

public/revealjs-plugins/chalkboard/img/boardmarker-black.png

public/revealjs-plugins/chalkboard/img/boardmarker-blue.png

public/revealjs-plugins/chalkboard/img/boardmarker-green.png

...ic/revealjs-plugins/chalkboard/img/boardmarker-orange.png

...ic/revealjs-plugins/chalkboard/img/boardmarker-purple.png

public/revealjs-plugins/chalkboard/img/boardmarker-red.png

...ic/revealjs-plugins/chalkboard/img/boardmarker-yellow.png