yaml: Add read_archive Options struct (currently a no-op) #13537
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This paves the way for dealing with parser options in a future commit.
Thread the Options through the Serialize/Visit flow but don't use it for anything yet.
Rename ReportMissingYaml to ReportError to avoid being overly specific; this was already used for error messages beyond just missing stuff.
While we're here, also import the unit test with helpful comments and extracting some literal strings into named variables.
This builds on #13533 and is a prerequisite for #13532 towards #13251.
This change is