feat: initialize project structure with core components and pages

- Added shared styles for UI components in `src/components/styles.ts`.
- Created configuration constants in `src/lib/config.ts`.
- Implemented date formatting and greeting functions in `src/lib/dates.ts` and corresponding tests in `src/lib/dates.test.ts`.
- Developed incident management functions in `src/lib/incidents.ts` with tests in `src/lib/incidents.test.ts`.
- Established navigation structure in `src/lib/navigation.ts`.
- Seeded demo data for incidents and users in `src/lib/seed.ts`.
- Defined tone classes for UI elements in `src/lib/tones.ts`.
- Created type definitions for incidents and related entities in `src/lib/types.ts`.
- Set up main application entry point in `src/main.tsx`.
- Developed various pages including About, Analytics, Incidents, Locations, Overview, and Report Incident.
- Configured testing setup in `src/test/setup.ts` and TypeScript configurations.
- Integrated Vite for development and testing with appropriate plugins.

vite.config.ts

@@ -0,0 +1,19 @@
+/// <reference types="vitest/config" />
+import react from '@vitejs/plugin-react'
+import tailwindcss from '@tailwindcss/vite'
+import { readFileSync } from 'node:fs'
+import { defineConfig } from 'vite'
+
+const { version } = JSON.parse(readFileSync(new URL('./package.json', import.meta.url), 'utf8')) as { version: string }
+
+// https://vite.dev/config/
+export default defineConfig({
+  plugins: [react(), tailwindcss()],
+  define: { __APP_VERSION__: JSON.stringify(version) },
+  test: {
+    environment: 'jsdom',
+    globals: true,
+    setupFiles: ['./src/test/setup.ts'],
+    include: ['src/**/*.test.{ts,tsx}'],
+  },
+})