chore: make zmq dependency optional

Author: makkus

pyproject.toml

@@ -62,7 +62,6 @@ dependencies = [
     "pydantic>=2.0.0,<3.0.0",
     "pydantic-settings>=2.0.0",
     "pytz>=2022.6",
-    "pyzmq>=25.0.0",
     "regex>=2022.4.0",
     "rich>=14.0.0",
     "rich-click>=1.8.9",
@@ -255,6 +254,11 @@ lz4 = [
     "lz4>=4.3.0",
 ]
 
+zmq = [
+    "pyzmq>=25.0.0",
+]
+
+
 [project.urls]
 homepage = "https://github.com/DHARPA-Project/kiara"
 documentation = "https://dharpa.org/kiara.documentation"