feat(storage): Add versioning as optional metadata param for createBucket

[akabraham]

Fixes #1089 🦕

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[jkwlui]

Thank you!

[AVaksman]

Suggested change

	assert.strictEqual(bucket.metadata.versioning.enabled, null);
	assert.strictEqual(bucket.metadata.versioning, undefined);

I believe in the default case metadata won't have the versioning property.

[akabraham]

Ok, fixed this and repushed

[jkwlui]

Thank you for the contribution! @akabraham