Add tech spec pdfs for new SPIKE Prime small hub and components.

[gpdaniels]

• [x] 45609 LEGO Technic Small Hub
• [x] 45607 LEGO Technic Small Angular Motor
• [x] 45608 LEGO Technic 3×3 Color Light Matrix
• [x] 45612 LEGO Technic Small Hub Battery

[cscovino]

Here are the tech spec pdfs:

• Spike Essential
• Spike Prime

I created a PR