Feature/converstion/googleai/1.16 (#4611)

* add documentation for GoogleAI conversation component

Signed-off-by: Emmanuel Auffray <emmanuel.auffray@gmail.com>

* add GoogleAI component to conversation documentation

Signed-off-by: Emmanuel Auffray <emmanuel.auffray@gmail.com>

---------

Signed-off-by: Emmanuel Auffray <emmanuel.auffray@gmail.com>
Co-authored-by: Yaron Schneider <schneider.yaron@live.com>

daprdocs/content/en/reference/components-reference/supported-conversation/googleai.md

@@ -0,0 +1,42 @@
+---
+type: docs
+title: "GoogleAI"
+linkTitle: "GoogleAI"
+description: Detailed information on the GoogleAI conversation component
+---
+
+## Component format
+
+A Dapr `conversation.yaml` component file has the following structure:
+
+```yaml
+apiVersion: dapr.io/v1alpha1
+kind: Component
+metadata:
+  name: googleai
+spec:
+  type: conversation.googleai
+  metadata:
+  - name: key
+    value: mykey
+  - name: model
+    value: gemini-1.5-flash
+  - name: cacheTTL
+    value: 10m
+```
+
+{{% alert title="Warning" color="warning" %}}
+The above example uses secrets as plain strings. It is recommended to use a secret store for the secrets, as described [here]({{< ref component-secrets.md >}}).
+{{% /alert %}}
+
+## Spec metadata fields
+
+| Field              | Required | Details | Example |
+|--------------------|:--------:|---------|---------|
+| `key`   | Y | API key for GoogleAI. | `mykey` |
+| `model` | N | The GoogleAI LLM to use. Defaults to `gemini-1.5-flash`.  | `gemini-2.0-flash` |
+| `cacheTTL` | N | A time-to-live value for a prompt cache to expire. Uses Golang duration format.  | `10m` |
+
+## Related links
+
+- [Conversation API overview]({{< ref conversation-overview.md >}})

daprdocs/data/components/conversation/generic.yaml

@@ -28,3 +28,8 @@
   state: Alpha
   version: v1
   since: "1.16"
+- component: GoogleAI
+  link: googleai
+  state: Alpha
+  version: v1
+  since: "1.16"