Tag inheritance #main/sub

[almarklein]

Discussed in #367

^{Originally posted by filcuk May 31, 2023}
Hi, I've been making great use of this tool lately.

I would really like to suggest creating tag 'templates', where, for example, project tags would always use the same colour, e.g. setting #222222 for #project/ would apply to #project/xyz or #project/123 automatically.