* experimental addition of pibd download state for testnet only

* fixes to bitmap number of segments calculation + conversion of bitmap accumulator to bitmap

* attempt to call a test message

* add p2p methods for receiving bitmap segment and applying to desegmenter associated with chain

* fixes to state sync

…from each (#3686)

* add functions to desegmenter to report next desired segments, begin to add state to determine which segments have been requested

* add segmentidentifier type to id requested segments uniquely

* make a call on where to keep track of which PIBD segments have been requested

* move segmenttype definition, add functions to manipulate peer segment list

* remove desegmenter state enum

* change chain desegmenter function to provide rwlock

* trace, warning cleanup

* udpate to test compliation

…ruction (#3689)

* application of received bitmap segments to local accumulator

* add all required elements to send/receive output segment requests and responses

* testing of output sync

* add special cases to pmmr segment request

* update pibd copy test to use new desgmenter structure

* begin reconstruction of output pmmr

* clean up hash/leaf insertion logic

* push pruned subtree appears to be working, now also calculates left hand hashes correctly

* factor out ordering of segment/hash order array

* refactor for pmmr application code

* test of chain copy appears to be working

* add rangeproof functions to desegmenter

* add kernel functions, attempt refactor

* small test cleanup, reconstruction of live chain working in manual copy test

…3691)

* add functions to determing latest verifiable block height for the given pibd state

* attempting to allow for pibd to resume after killing process

* fix to ensure prune list is properly flushed during pibd sync

* removal of unneeded code

* ignore test for now (fix before full merge)

…#3692)

* investigations as to why a slight rewind is needed on startup during PIBD

* move validation code into desegmenter validation thread (for now)

* ensure genesis entries in pmmrs are removed if they're removed in the first segment

* validation all working except for verifying kernel sums

* remove unneeded pmmr rollbacks on resume now root cause was found

* updates to remove unpruned leaves from leaf set when rebuilding pmmr

* remove + 1 to segment traversal iter length

* start to add stats and reset chain state after errors detected

* add functions to reset prune list when resetting chain pibd state

* debug statement

* remove test function

…3696)

* cleanup of segment request list

* allow for more simultaneous requests during state sync

* up number of simultaneous peer requests for segments

…pagation (#3698)

* change pibd stat display to show progress as a percentage of downloaded leaves

* attempt some inline rp validation

* propagate shutdown state through kernel validation

* change validation loop timing

* simplify validator threading

* add more detailed tracking of kernel history validation to tui, allow stop state during

* adding more stop state + tui progress indication

* remove progressive validate

* test fix

* ensure desegmenter attempts to apply correct block after a resumte

* ensure txhashset's committed implementation takes into account output bitmap for summing purposes

* remove check to de-apply outputs during segment application

* return removal of spent outputs during pibd

* remove unneeded status

* remove uneeded change to rewind function

* fix for writing / calculating incorrect length for negative indices

* update capabilities with new version of PIBD hist

* remove incorrect comment

* fix capabilities flag, trace output

* test fix

* update Cargo.lock for next release

* visibility scope tweaks to aid seed test utilities (#3707)