Adding JSON schema curl samples (#434)

* Adding JSON schema curl samples

json_no_schema working

Fix quoting.

* Update samples/rest/controlled_generation.sh

* Fix quoting again.

* use response_mime_type

Change-Id: I29f337ddf8ee9ceff628111a9124cb4e5141706b

---------

Co-authored-by: Mark Daoust <[email protected]>

samples/rest/controlled_generation.sh

@@ -0,0 +1,44 @@
+set -eu
+
+echo "json_controlled_generation"
+# [START json_controlled_generation]
+curl "https://generativelanguage.googleapis.com/v1beta/models/gemini-1.5-pro-latest:generateContent?key=$GOOGLE_API_KEY" \
+-H 'Content-Type: application/json' \
+-d '{
+    "contents": [{
+      "parts":[
+        {"text": "List 5 popular cookie recipes"}
+        ]
+    }],
+    "generationConfig": {
+        "response_mime_type": "application/json",
+        "response_schema": {
+          "type": "ARRAY",
+          "items": {
+            "type": "OBJECT",
+            "properties": {
+              "recipe_name": {"type":"STRING"},
+            }
+          }
+        }
+    }
+}' 2> /dev/null | head
+# [END json_controlled_generation]
+
+echo "json_no_schema"
+# [START json_no_schema]
+curl "https://generativelanguage.googleapis.com/v1beta/models/gemini-1.5-pro-latest:generateContent?key=$GOOGLE_API_KEY" \
+-H 'Content-Type: application/json' \
+-d '{
+    "contents": [{
+      "parts":[
+        {"text": "List a few popular cookie recipes using this JSON schema:
+
+            Recipe = {\"recipe_name\": str}
+            Return: list[Recipe]"
+        }
+      ]
+    }],
+    "generationConfig": { "response_mime_type": "application/json" }
+}' 2> /dev/null | head
+# [END json_no_schema]