[FR] Use YAML frontmatter for filtering/searching notes.

[marcjulianschwarz]

Proposed Addition

• use keys from the YAML frontmatter to enhance searches (fuzzy search)
• Related Issue: FEATURE: Display "Title" frontmatter if exists #1

Questions

• should keys be read automatically or should there be a predefined list of keys that will be used for searching (e.g. title, subtitle, etc.)?
• should keys be saved in the Note object?

Steps

• function for reading YAML frontmatter keys already exists yamlPropertyForString(content, "title")
• ...