Add type assembler for Person resources.

[tjhancocks]

Is your feature request related to a problem? Please describe.
This is to add a type assembler for the Person resource type (aka përs). This will allow declaring and defining Person resources in KDL. The assembler should output the current format expected by Nova.

Describe the solution you'd like
This will involve creating the kdk::person class (use kdk::sprite_animation and kdk::asteroid as reference), to assemble the binary data for the përs resource type. The field layout, naming and substitution symbols should be logical, and documented as part of the PR, allowing for any potential bike shedding of names and value groupings to be discussed.

Describe alternatives you've considered
Not applicable.

Additional context
None