Refactor genai (#22752)

* Switch to a feature-based roles so it is easier to choose models for different tasks

* Fallback and try llama-swap format

* List models supported by provider

* Cleanup

* Add frontend

* Improve model loading

* Make it possible to update genai without restarting

* Cleanup

* Cleanup

* Mypy

web/src/components/config-form/section-configs/genai.ts

@@ -3,14 +3,6 @@ import type { SectionConfigOverrides } from "./types";
 const genai: SectionConfigOverrides = {
   base: {
     sectionDocs: "/configuration/genai/config",
-    restartRequired: [
-      "*.provider",
-      "*.api_key",
-      "*.base_url",
-      "*.model",
-      "*.provider_options",
-      "*.runtime_options",
-    ],
     advancedFields: ["*.base_url", "*.provider_options", "*.runtime_options"],
     hiddenFields: ["genai.enabled_in_config"],
     uiSchema: {
@@ -37,6 +29,7 @@ const genai: SectionConfigOverrides = {
         "ui:options": { size: "lg" },
       },
       "*.model": {
+        "ui:widget": "genaiModel",
         "ui:options": { size: "xs" },
       },
       "*.provider": {