docs(conversation): add GoogleAI and Ollama conversation component docs

Signed-off-by: Erin La <107987318+giterinhub@users.noreply.github.com>

Author: giterinhub

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

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+---
+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: '${{DAPR_CONVERSATION_GOOGLEAI_MODEL}}'
+  - name: cacheTTL
+    value: 10m
+```
+
+{{% alert title="Warning" color="warning" %}}
+The above example uses secrets as plain strings. It is recommended to use a secret store for the secrets, as described [here]({{< ref component-secrets.md >}}).
+{{% /alert %}}
+
+## Spec metadata fields
+
+| Field              | Required | Details | Example |
+|--------------------|:--------:|---------|---------|
+| `key`   | Y | API key for GoogleAI. | `"mykey"` |
+| `model` | N | The GoogleAI LLM to use. Defaults to `gemini-1.5-flash` (configurable via `DAPR_CONVERSATION_GOOGLEAI_MODEL` environment variable).  | `${{DAPR_CONVERSATION_GOOGLEAI_MODEL}}` |
+| `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/content/en/reference/components-reference/supported-conversation/ollama.md

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+---
+type: docs
+title: "Ollama"
+linkTitle: "Ollama"
+description: Detailed information on the Ollama conversation component
+---
+
+## Component format
+
+A Dapr `conversation.yaml` component file has the following structure:
+
+```yaml
+apiVersion: dapr.io/v1alpha1
+kind: Component
+metadata:
+  name: ollama
+spec:
+  type: conversation.ollama
+  metadata:
+  - name: model
+    value: '${{DAPR_CONVERSATION_OLLAMA_MODEL}}'
+  - name: cacheTTL
+    value: 10m
+```
+
+{{% alert title="Warning" color="warning" %}}
+The above example uses secrets as plain strings. It is recommended to use a secret store for the secrets, as described [here]({{< ref component-secrets.md >}}).
+{{% /alert %}}
+
+## Spec metadata fields
+
+| Field              | Required | Details | Example |
+|--------------------|:--------:|---------|---------|
+| `model` | N | The Ollama LLM to use. Defaults to `llama3.2:latest` (configurable via `DAPR_CONVERSATION_OLLAMA_MODEL` environment variable).  | `${{DAPR_CONVERSATION_OLLAMA_MODEL}}` |
+| `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 >}})