Python: Move workflow-samples and agent-samples under declarative-agents directory (microsoft#5011)

* Move workflow-samples and agent-samples under declarative-agents and update all references

Agent-Logs-Url: https://github.com/microsoft/agent-framework/sessions/f70f7d19-9256-4eec-b7db-28007d74440c

Co-authored-by: sphenry <6749825+sphenry@users.noreply.github.com>

* Fix relative paths in README files inside moved directories

Agent-Logs-Url: https://github.com/microsoft/agent-framework/sessions/f70f7d19-9256-4eec-b7db-28007d74440c

Co-authored-by: sphenry <6749825+sphenry@users.noreply.github.com>

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: sphenry <6749825+sphenry@users.noreply.github.com>
Co-authored-by: Shawn Henry <shahen@microsoft.com>

Author: Copilot

.github/workflows/dotnet-build-and-test.yml

@@ -82,7 +82,7 @@ jobs:
               .github
               dotnet
               python
-              workflow-samples
+              declarative-agents
 
       - name: Setup dotnet
         uses: actions/setup-dotnet@v5.2.0
@@ -152,7 +152,7 @@ jobs:
               .github
               dotnet
               python
-              workflow-samples
+              declarative-agents
 
       # Start Cosmos DB Emulator for all integration tests and only for unit tests when CosmosDB changes happened)
       - name: Start Azure Cosmos DB Emulator

.github/workflows/dotnet-integration-tests.yml

@@ -38,7 +38,7 @@ jobs:
             .github
             dotnet
             python
-            workflow-samples
+            declarative-agents
 
       - name: Start Azure Cosmos DB Emulator
         if: runner.os == 'Windows'