all properties should be marked with a tick timestamp

[TheYellowArchitect]

This helps immensely with implementing (and debugging) diff state, and input delay #261

However, if each property entry added a tick_timestamp: int variable added to it, it would be bloated, because 5 properties would have 5 tick timestamps, all of these tick timestamps being the exact same value!

So I suggest having something like a wrapper, like so:

PropertiesWrapper
var tick_timestamp: int
var properties: Array[PropertyEntry]

and it is the above class used for states and inputs.

My suggestion is to simply hardcode a property onto each Array[PropertyEntry], that being ["tick"], see #261

Edit: nvm I'm stupid. I just used the tick index before the properties.