Function try_with_handler

pub fn try_with_handler<F, Ret>(
    cm: Lrc<SourceMap>,
    config: HandlerOpts,
    op: F,
) -> Result<Ret, TWithDiagnosticArray<Error>>
where
    F: FnOnce(&Handler) -> Result<Ret, Error>,

Try operation with a [Handler] and prints the errors as a String wrapped by Err.