🧠 feat: Cohere support as Custom Endpoint (#2328)

* chore: bump cohere-ai, fix firebase vulnerabilities by going down versions

* feat: cohere rates and context windows

* feat(createCoherePayload): transform openai payload for cohere compatibility

* feat: cohere backend support

* refactor(UnknownIcon): optimize icon render and add cohere

* docs: add cohere to Compatible AI Endpoints

* Update ai_endpoints.md

client/src/common/types.ts

@@ -20,6 +20,13 @@ export type GenericSetter<T> = (value: T | ((currentValue: T) => T)) => void;
 
 export type LastSelectedModels = Record<EModelEndpoint, string>;
 
+export enum IconContext {
+  landing = 'landing',
+  menuItem = 'menu-item',
+  nav = 'nav',
+  message = 'message',
+}
+
 export type NavLink = {
   title: string;
   label?: string;