To do

[gwennlbh]

• React to text edits
• react to edits to tags/techs repos
• diagnostics: validate metadata (finished after started, color has right format, layout is coherent, etc)
• code actions: fill layout, autodetect tags, autodetect techs,
• rename tags/techs: add aliases because changing in all description files might be too much?
• snippets: add m/p/l block
• hover: layout cell, show the block it refers to
• documentColor: for colors metadata