Create JSON dataset for Unit types

[tbm0115]

A JSON dataset is required to yield a comprehensive list of all Unit types. Here are some examples of properties we may need:

• Name of unit
• Tier of unit (I, II, III, or IV)
• Alignment of unit (Good, Bad, Neutral)
• Flavor text (for example: "Ranged unit very effective against Melee enemies")
• Attack type
• Units per command
• Race of unit (Dwarves, Elves, etc.)
• Base stats (HP, Damage, Speed, Defense, Siege)
• Skills/Perks
  • Growth per level
• Base conscription cost (wood, stone, iron, wheat, gold, and time)