feat(chat): added chat interface and connection to ollama (#10)

Co-authored-by: Sharang Parnerkar <parnerkarsharang@gmail.com>
Reviewed-on: #10

src/components/chat_model_selector.rs

@@ -0,0 +1,42 @@
+use dioxus::prelude::*;
+
+/// Dropdown bar for selecting the LLM model for the current chat session.
+///
+/// Displays the currently selected model and a list of available models
+/// from the Ollama instance. Fires `on_change` when the user selects
+/// a different model.
+///
+/// # Arguments
+///
+/// * `selected_model` - The currently active model ID
+/// * `available_models` - List of model names from Ollama
+/// * `on_change` - Callback fired with the new model name
+#[component]
+pub fn ChatModelSelector(
+    selected_model: String,
+    available_models: Vec<String>,
+    on_change: EventHandler<String>,
+) -> Element {
+    rsx! {
+        div { class: "chat-model-bar",
+            label { class: "chat-model-label", "Model:" }
+            select {
+                class: "chat-model-select",
+                value: "{selected_model}",
+                onchange: move |e: Event<FormData>| {
+                    on_change.call(e.value());
+                },
+                for model in &available_models {
+                    option {
+                        value: "{model}",
+                        selected: *model == selected_model,
+                        "{model}"
+                    }
+                }
+                if available_models.is_empty() {
+                    option { disabled: true, "No models available" }
+                }
+            }
+        }
+    }
+}