first cut of horizontal partitioning

# Conflicts:
#	Cargo.lock

# Conflicts:
#	Cargo.lock
#	crates/g3-cli/src/lib.rs

Cargo.lock

@@ -1365,6 +1365,7 @@ dependencies = [
  "dirs 5.0.1",
  "g3-config",
  "g3-core",
+ "g3-ensembles",
  "g3-planner",
  "g3-providers",
  "hex",
@@ -1488,6 +1489,23 @@ dependencies = [
  "walkdir",
 ]
 
+[[package]]
+name = "g3-ensembles"
+version = "0.1.0"
+dependencies = [
+ "anyhow",
+ "chrono",
+ "clap",
+ "g3-config",
+ "g3-core",
+ "serde",
+ "serde_json",
+ "tempfile",
+ "tokio",
+ "tracing",
+ "uuid",
+]
+
 [[package]]
 name = "g3-execution"
 version = "0.1.0"