Add Article-Group to Navigation

[VillageHubertChen]

Tasks

• [x] HC: Write → Function of Article Group → below
• [x] LC: Implement by → Grouping V²Plan System Articles, then trigger HC for testing
• [x] HC: Test

• [x] Write / update documentation → YAML file for Book-Bar

  Gating What

  V²Flow.Art & V²Flow can not be created without Article Groups

  Function of Article Group

• Groups Articles in the Article Bar
• Function is described in References below

  References

• Epic►005►Parent: Compile Know How►GitHub Template #48
• Epic►001►Navigation Bar System v3 #47
• Library Metaphor for V² Navigation #44