fix: generalize frontmatter parsing and coercing

Jacky Zhao

2024-01-28 42ee069c1cc515e6c5e595143e46c8201c6cbe3f

 quartz/cfg.ts

@@ -7,6 +7,7 @@
  | null
  | {
      provider: "plausible"
      host?: string
    }
  | {
      provider: "google"