feat: IC-1680: Add NPR V1 lib - Performance Multiplier Calculator

[pietrodimarco-dfinity]

Node Provider Rewards V1 Library
This library computes performance-based rewards (in XDR) for node providers over a given reward period. Rewards are adjusted based on each node's performance using trustworthy node metrics. The implementation follows the accepted proposal 135054.

This PR implement the first step of the reward computation process:

• Add PerformanceMultipliers computation for each node based on its failure rate, derived from the number of blocks it failed to propose vs. successfully proposed.
• Includes tests for both the PerformanceMultipliers computation and library inputs.
• Adds detailed logging to track each step of the computation process.

Next Steps (TODO)
The next phase will apply the computed PerformanceMultipliers to the monthly XDR incentives each node receives for participating in the IC network.