[B+C] Update SkullMeta to use UUIDs. Adds BUKKIT-5614

**The Issue**:

SkullMeta.setOwner() does not populate the skull's GameProfile information

**Justification for this PR**:

It's not possible to spawn a skull item with a texture attached to it.  Skull items can be worn on the head, and thus need their textures attached as soon as they exist.

**PR Breakdown**:

SkullMeta tracks a new key 'skull-owner-uuid'
CraftMetaSkull.setOwner(String) has been modified to call MinecraftSessionService.fillProfileProperties()
CraftMetaSkull.setOwner(UUID) has been added, which also calls MinecraftSessionService.fillProfileProperties()

The fillProfileProperties() function attaches all profile data, including textures, to the item.

**Relevant PR**:



**JIRA Ticket**:

BUKKIT-5614 - https://bukkit.atlassian.net/browse/BUKKIT-5614