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>

declarative-agents/agent-samples/foundry/FoundryAgent.yaml

@@ -0,0 +1,22 @@
+kind: Prompt
+name: Assistant
+description: Helpful assistant
+instructions: You are a helpful assistant. You answer questions in the language specified by the user. You return your answers in a JSON format.
+model:
+    id: gpt-4.1-mini
+    options:
+        temperature: 0.9
+        topP: 0.95
+    connection:
+        kind: Remote
+        endpoint: =Env.AZURE_FOUNDRY_PROJECT_ENDPOINT
+outputSchema:
+    properties:
+        language:
+            type: string
+            required: true
+            description: The language of the answer.
+        answer:
+            type: string
+            required: true
+            description: The answer text.

declarative-agents/agent-samples/foundry/MicrosoftLearnAgent.yaml

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+kind: Prompt
+name: MicrosoftLearnAgent
+description: Microsoft Learn Agent
+instructions: You answer questions by searching the Microsoft Learn content only.
+model:
+    id: =Env.AZURE_FOUNDRY_PROJECT_MODEL_ID
+    options:
+        temperature: 0.9
+        topP: 0.95
+    connection:
+        kind: remote
+        endpoint: =Env.AZURE_FOUNDRY_PROJECT_ENDPOINT
+tools:
+  - kind: mcp
+    name: microsoft_learn
+    description: Get information from Microsoft Learn.
+    url: https://learn.microsoft.com/api/mcp
+    approvalMode:
+      kind: never
+    allowedTools:
+      - microsoft_docs_search

declarative-agents/agent-samples/foundry/PersistentAgent.yaml

@@ -0,0 +1,22 @@
+kind: Prompt
+name: Assistant
+description: Helpful assistant
+instructions: You are a helpful assistant. You answer questions is the language specified by the user. You return your answers in a JSON format.
+model:
+    id: =Env.AZURE_FOUNDRY_PROJECT_MODEL_ID
+    options:
+        temperature: 0.9
+        topP: 0.95
+    connection:
+        kind: remote
+        endpoint: =Env.AZURE_FOUNDRY_PROJECT_ENDPOINT
+outputSchema:
+    properties:
+        language:
+            kind: string
+            required: true
+            description: The language of the answer.
+        answer:
+            kind: string
+            required: true
+            description: The answer text.