Resolve details around handling of delay polynomials

Though the basic architectural design for handling delay polynomials (who calculates them, how they are communicated, content) is in place and reasonably well understood a few prominent details have arisen which this ADR aims to resolve.

Though these details arose in discussions relating to the LOW implementation it is worthwhile addressing both telescopes aiming for as. much commonality in approach as is possible.

Scope: TMC, Mid and Low CBFs

Quality: Performance, Architectural Integrity

Why now? Work on handling delays is in progress and will be needed for AA0.5