Add CEO company branding endpoint

Co-Authored-By: Paperclip <noreply@paperclip.ing>

ui/src/api/companies.ts

@@ -5,6 +5,7 @@ import type {
   CompanyPortabilityImportResult,
   CompanyPortabilityPreviewRequest,
   CompanyPortabilityPreviewResult,
+  UpdateCompanyBranding,
 } from "@paperclipai/shared";
 import { api } from "./client";
 
@@ -29,6 +30,8 @@ export const companiesApi = {
       >
     >,
   ) => api.patch<Company>(`/companies/${companyId}`, data),
+  updateBranding: (companyId: string, data: UpdateCompanyBranding) =>
+    api.patch<Company>(`/companies/${companyId}/branding`, data),
   archive: (companyId: string) => api.post<Company>(`/companies/${companyId}/archive`, {}),
   remove: (companyId: string) => api.delete<{ ok: true }>(`/companies/${companyId}`),
   exportBundle: (