Feat/sm layer detection

[samuelOsborne]

This PR adds layer hit detection, along with a few refactors

Features:

• Layer hit check based on a layer name, x & y coordinate
• Added getLayerBounds API function. Pass a layer name and it returns a vec where the first 4 values correspond to x, y, width, height
• Added perform_hit_check(&self, target: &str, x: f32, y: f32) which returns true if the supplied target string (layer name) and x, y coordinate are within its bounding box, otherwise returns false

Refactors:

• Removed postEventPayload for web, replaced with individual functions
• Created and split events in to "Internal" events and "Events". This was to accommodate for the fact that we need different event definitions depending if we're managing the configuration file or at runtime. The was mostly the fact for pointer events where we declare a pointer event and a "target" property, but at runtime we send a pointer event with x and y coordinates.
• Split out the state machine demoes in to self-contained runnable examples from the bin folder.

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Latest commit: 53730279920f12f8c89f1e6b4becb4200f952dd0

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[samuelOsborne]

Web tests

https://github.com/user-attachments/assets/5671c5ee-d45a-4550-900c-95027f330da3

[samuelOsborne]

iOS tests

https://github.com/user-attachments/assets/4ce9553e-3bbf-4f0e-909e-8387c097579e

[samuelOsborne]

Rust tests

https://github.com/user-attachments/assets/f2cdbc74-a596-4394-8a71-4dee36e5c2b2