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/setup.ts

@@ -1,20 +0,0 @@
-import client from './client';
-
-export interface SetupStatus {
-  setupRequired: boolean;
-}
-
-export interface SetupRequest {
-  name: string;
-  email: string;
-  password: string;
-}
-
-export const getSetupStatus = async (): Promise<SetupStatus> => {
-  const response = await client.get<SetupStatus>('/setup');
-  return response.data;
-};
-
-export const performSetup = async (data: SetupRequest): Promise<void> => {
-  await client.post('/setup', data);
-};