Tags from frontmatter aren't read as tags

[Robin-Haupt-1]

There's a frontmatter field called "tags" that contains an array of strings that Obsidian treats like tags created using a hashtag in the notes content. Currently obsidiantools doesn't include this information when building the tags_index. (See https://help.obsidian.md/Editing+and+formatting/Tags)

It would be great if this feature could be added.