feat: self-serve signup Phase 2 (frontend cutover) (#162)

Co-authored-by: Michael Chihlas <michael@resolutionflow.com>
Co-committed-by: Michael Chihlas <michael@resolutionflow.com>

frontend/src/api/config.ts

@@ -0,0 +1,15 @@
+import apiClient from './client'
+
+export interface PublicConfig {
+  self_serve_enabled: boolean
+  oauth_providers: string[]
+}
+
+export const configApi = {
+  async getPublic(): Promise<PublicConfig> {
+    const response = await apiClient.get<PublicConfig>('/config/public')
+    return response.data
+  },
+}
+
+export default configApi