Introduce obikalgorithm crate to unify pipeline algorithms

Define a shared Algorithm trait with an associated Output type and a parameterless run(&mut self) method. Refactor PartitionRouter, Dereplicator, Counter, and LayerBuilder to implement the trait, standardizing receivers to &mut self and moving configuration and progress callbacks to dedicated builder setters. Decouple error handling using a generic boxed error type and update workspace dependencies accordingly.

src/Cargo.lock

@@ -1515,6 +1515,10 @@ dependencies = [
  "xxhash-rust",
 ]
 
+[[package]]
+name = "obikalgorithm"
+version = "0.1.0"
+
 [[package]]
 name = "obikentropy"
 version = "0.1.0"
@@ -1564,6 +1568,7 @@ dependencies = [
  "niffler",
  "obicompactvec",
  "obidebruinj",
+ "obikalgorithm",
  "obikindex",
  "obikrope",
  "obikseq",
@@ -1591,6 +1596,7 @@ dependencies = [
  "kodama",
  "obidebruinj",
  "obifastwrite",
+ "obikalgorithm",
  "obikindex",
  "obikindexer",
  "obikphylo",
@@ -1619,6 +1625,7 @@ dependencies = [
  "memmap2",
  "ndarray",
  "obicompactvec",
+ "obikalgorithm",
  "obikindex",
  "obikindexer",
  "obikseq",