feat: Implement RSSI service for iOS and Web platforms

- Added IosRssiService to handle synthetic RSSI data for iOS.
- Created WebRssiService to simulate RSSI scanning on the web.
- Defined shared types for WifiNetwork and RssiService in rssi.service.ts.
- Introduced simulation service to generate synthetic sensing data.
- Implemented WebSocket service for real-time data handling with reconnection logic.
- Established Zustand stores for managing application state related to MAT and pose data.
- Developed theme context and utility functions for consistent styling and formatting.
- Added type definitions for various application entities including API responses and sensing data.
- Created utility functions for color mapping and URL validation.
- Configured TypeScript settings for the mobile application.

ui/mobile/src/theme/typography.ts

@@ -0,0 +1,26 @@
+import { Platform } from 'react-native';
+
+export const typography = {
+  displayXl: { fontSize: 48, fontWeight: '700', letterSpacing: -1 },
+  displayLg: { fontSize: 32, fontWeight: '700', letterSpacing: -0.5 },
+  displayMd: { fontSize: 24, fontWeight: '600' },
+  labelLg: {
+    fontSize: 16,
+    fontWeight: '600',
+    letterSpacing: 0.5,
+    textTransform: 'uppercase',
+  },
+  labelMd: {
+    fontSize: 12,
+    fontWeight: '600',
+    letterSpacing: 1,
+    textTransform: 'uppercase',
+  },
+  bodyLg: { fontSize: 16, fontWeight: '400' },
+  bodyMd: { fontSize: 14, fontWeight: '400' },
+  bodySm: { fontSize: 12, fontWeight: '400' },
+  mono: {
+    fontFamily: Platform.OS === 'ios' ? 'Courier New' : 'monospace',
+    fontSize: 13,
+  },
+};