Resolve "Tag blog posts with projects, target groups, and maybe tags"

Closes #31 (closed)

content/blog/2024/03/2024-03-13_glt-2024/index.md

@@ -6,6 +6,7 @@ authors = ["nik"]
 categories = ["AAA"]
 tags = ["Konferenzen", "GLT", "Ankündigung"]
 projekt = ["Hack'n'Fun", "schul-frei"]
+zielgruppe = ["Kinder und Jugendliche", "Eltern"]
 aspekte = ["Workshops", "Junge Menschen in FOSS-Projekten"]
 produkte = ["FrogLabs"]