Remove Settings and Setup pages along with their tests and related API services

- Deleted Settings.tsx and Setup.tsx pages, which included functionality for changing passwords and setting up an admin account.
- Removed associated test files for Setup page.
- Eliminated API service definitions related to proxy hosts, remote servers, import functionality, and health checks.
- Cleaned up mock data and test setup files.
- Removed configuration files for TypeScript, Vite, and Tailwind CSS.
- Deleted scripts for testing coverage, release management, Dockerfile validation, and Python compilation checks.
- Removed Sourcery pre-commit wrapper script.

frontend/src/api/health.ts

@@ -1,11 +0,0 @@
-import client from './client';
-
-export interface HealthResponse {
-  status: string;
-  service: string;
-}
-
-export const checkHealth = async (): Promise<HealthResponse> => {
-  const { data } = await client.get<HealthResponse>('/health');
-  return data;
-};