Engine work from Peoplemon

[benreid24]

Adds:

• Letterboxing
• Camera system from Peoplemon
• Vector math module
• Input system
• Engine example
• Input example
• Events cleanup and example
• Adds ObjectWrapper utility
• Adds RingQueue container
• Re-implement ECS to be much more cache friendly and faster
• Refactor event dispatcher to remove runtime type lookups and optimize locking
• Refactor Grid to accept trivial types only and remove awful iterator
• Refactor DynamicObjectPool to ObjectPool and implement no-allocation policies
• Adds a SubmenuItem menu item
• Adds additional options for window creation (explicit view size for letterboxing, vsync, etc)
• Adds a ToggleTextItem menu item
• Adds ability to mute/unmute in AudioSystem
• Adds ability to load/save AudioSystem settings to engine config

Resolves #46 Resolves #53 Resolves #133 Resolves #52 Resolves #58 Resolves #59 Resolves #143 Resolves #45 Resolves #100 Resolves #142 Resolves #144