feat:splitstore:single compaction that can handle prune aka two marksets one compaction (#9571)

* begin

* rough draft -- this should probably actually work?

* WIP

* Start testing

* message mode

* Fix tests, make gen

* Better default

* docsgen-cli

* Review Response

Co-authored-by: zenground0 <ZenGround0@users.noreply.github.com>

node/builder_chain.go

@@ -181,7 +181,7 @@ func ConfigFullNode(c interface{}) Option {
 		Override(new(dtypes.UniversalBlockstore), modules.UniversalBlockstore),
 
 		If(cfg.Chainstore.EnableSplitstore,
-			If(cfg.Chainstore.Splitstore.ColdStoreType == "universal",
+			If(cfg.Chainstore.Splitstore.ColdStoreType == "universal" || cfg.Chainstore.Splitstore.ColdStoreType == "messages",
 				Override(new(dtypes.ColdBlockstore), From(new(dtypes.UniversalBlockstore)))),
 			If(cfg.Chainstore.Splitstore.ColdStoreType == "discard",
 				Override(new(dtypes.ColdBlockstore), modules.DiscardColdBlockstore)),