optimizations + IsStatic support

Breaking(?) changes:

• Deprecated the following:
  • delegate `SendSpawnMessagePatch.SpawnDataModifier(NetworkIdentity, NetworkConnection, ref SpawnMessage)
  • field SendSpawnMessagePatch.SpawnDataModifiers
  • method SendSpawnMessagePatch.ModifySpawnMessage(NetworkIdentity, NetworkConnection, ref SpawnMessage)
• Use the below method instead

Additions:

• API::SpawnGameObjectWithGlobalTransform(GameObject) - optimizations based on #10
  • This method forces Mirror to use world-space transform (instead of localPosition localRotation localScale) when writing the spawn message
  • The global state isn't retained when writing data to later created connections, unless an slocObjectData component is added to the GameObject
    • A GameObject with an slocObjectData component will always have its transform written as global transform
• API.ShouldSpawnWithGlobalTransform field (shouldn't be set manually, used by patches)

Changes (non-breaking):

• Updated EXILED to 8.7.1
• Modified the AdminToyPatch to return if an AdminToy's IsStatic property is set to true