Python: [BREAKING] Move workflow to main package (#767)

* Move workflow to main package

* Remove workflow specific unit test config

* Remove workflow-specific version info

* Revert unintended telemetry changes

* Removed the obsolete packages/workflow/tests target

* Rename dir workflow to _workflow

* Fix test imports

python/packages/main/pyproject.toml

@@ -33,7 +33,8 @@ dependencies = [
     "azure-monitor-opentelemetry>=1.7.0",
     "azure-monitor-opentelemetry-exporter>=1.0.0b41",
     "opentelemetry-exporter-otlp-proto-grpc>=1.36.0",
-    "opentelemetry-semantic-conventions-ai>=0.4.13"
+    "opentelemetry-semantic-conventions-ai>=0.4.13",
+    "aiofiles>=24.1.0"
 ]
 
 [project.optional-dependencies]
@@ -43,8 +44,8 @@ azure = [
 foundry = [
     "agent-framework-foundry"
 ]
-workflow = [
-    "agent-framework-workflow"
+viz = [
+    "graphviz>=0.20.0",
 ]
 runtime = [
     "agent-framework-runtime"
@@ -55,7 +56,6 @@ mem0 = [
 all = [
     "agent-framework-azure",
     "agent-framework-foundry",
-    "agent-framework-workflow",
     "agent-framework-runtime",
     "agent-framework-mem0"
 ]