* Save DAA score and DAA added blocks for each block
* Add test
* Add pruning support
* Replace 8 with uint64Length
* Separate DAABlocksStore cache size to DAA score and daaAddedBlocks
* Move timesorter to its own package and remove unused functions
* Remove padding+genesis from BlockWindow
* Adjust the difficulty even when there's less than difficultyAdjustmentWindowSize blocks
* Remove unnecessary check from checkBlockTransactionsFinalized
* Update tests with new pastMedianTime and Difficulty
* Review nit
* Log the hashrate of each block
* Add a test for GetHashrateString
* Move difficulty related functions to its own package
* Convert the validated log in validateAndInsertBlock to a log function
* Add tests for max/min int
* Convert BlockGHOSTDAGData from an interface to a public struct with getters
* Move hashes.Less to externalapi so it can access the hashes directly without copying
* Reduce calls to ghostdagstore.Get in blueWindow
* Simplify the logic in RequiredDifficulty and reuse big.Int
* Remove bigintpool as its no longer used
* Use ChooseSelectedParent in RequiredDifficulty instead of looping over the parents
* Remove comment
* Change DifficultyAdjustmentWindowSize and TimestampDeviationTolerance from uint64 to int
* refactor block_heap for readability and usage
* Add a new SizedUpHeap
* Refactor BlueWindow with the new DAA
* Update TestBlueBlockWindow with the new DAA window
* Fix review requested changes
* Refactor the Difficulty adjastment to the new design
* Add the necessary things to the factory for the DAA constructor
* Add missing dagParams to difficultymanager constructor
* Use DAGTraversal for blueBlockWindow, and don't store PowMax compactBits
