feat: calculate per-staker bond reward accrual

[rafa-stacks]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 93.11224% with 27 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
src/datastore/pg-write-store.ts	76.85%	25 Missing ⚠️
...grations/1779745340753_bond-reward-calculations.ts	99.18%	0 Missing and 1 partial ⚠️
...79745340754_principal-bond-reward-distributions.ts	98.91%	0 Missing and 1 partial ⚠️

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