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/tailwind.config.js

@@ -1,20 +0,0 @@
-/** @type {import('tailwindcss').Config} */
-export default {
-  darkMode: 'class',
-  content: [
-    "./index.html",
-    "./src/**/*.{js,ts,jsx,tsx}",
-  ],
-  theme: {
-    extend: {
-      colors: {
-        'dark-bg': '#0f172a',
-        'dark-sidebar': '#020617',
-        'dark-card': '#1e293b',
-        'blue-active': '#1d4ed8',
-        'blue-hover': '#2563eb',
-      },
-    },
-  },
-  plugins: [],
-}