Initial attempt to parse default values for arrays

[gotnone]

This patch allows default values to be specified for array types in jsdoc schema comments.

[gotnone]

While working on this patch I am leaning toward running all schema.default values through JSON.parse(). If that also makes sense to you, I can rework the patch to drop the extra switch statement underneath the default tag case. This should then cover any* primitives that can be represented in JSON (*BigInt may require something like json-bigint for proper parsing).