config $siteTitle by frontmatter

[andyFang94]

Feature request

What problem does this feature solve?

Different pages can be configured with different site names

What does the proposed API look like?

  get $siteTitle () {
     const { siteTitle } = this.$page.frontmatter
     return siteTitle  || this.$localeConfig.title || this.$site.title || ''
   }

How should this be implemented in your opinion?

Are you willing to work on this yourself?