feat: proto encode/decode EFRUP conditions

[rtkay123]

What did we change?

Add helper functions to encode/decode EFRuP conditions to Buffers

Why are we doing this?

All cache writes should store buffers

How was it tested?

• [x] Locally
• [x] Development Environment
• [ ] Not needed, changes very basic
• [x] Husky successfully run
• [x] Unit tests passing and Documentation done