Proposed Changes to Bestiary and Powers List

[LockerM]

In this PR @D-D-2 and I:

• [X] Added new Powers to the Powers YAML
• [X] Removed Powers from the Powers YAML
• [X] Revised existing Powers for clarity and consistency
• [X] Re-organized the Powers YAML to have Player available Powers first, and then GM-specific Powers at the bottom
• [X] Added new Beasts to the Bestiary
• [X] Added Hidden Property + Invisible and Grappled Status Conditions