Reorganize repository into monorepo structure

Restructured the project to support multiple frontend applications:
- Move web app to web/ directory
- Create pezkuwi-sdk-ui/ for Polkadot SDK clone (planned)
- Create mobile/ directory for mobile app development
- Add shared/ directory with common utilities, types, and blockchain code
- Update README.md with comprehensive documentation
- Remove obsolete DKSweb/ directory

This monorepo structure enables better code sharing and organized
development across web, mobile, and SDK UI projects.

web/vite.config.ts

@@ -0,0 +1,32 @@
+import { defineConfig } from "vite";
+import react from "@vitejs/plugin-react-swc";
+import path from "path";
+
+// https://vitejs.dev/config/
+export default defineConfig(({ mode }) => ({
+  server: {
+    host: "::",
+    port: 8081,
+    hmr: {
+      protocol: 'ws',
+      host: 'localhost',
+      port: 8081,
+    },
+    watch: {
+      usePolling: true,
+    },
+  },
+  plugins: [
+    react()
+  ].filter(Boolean),
+  resolve: {
+    alias: {
+      "@": path.resolve(__dirname, "./src"),
+      "@pezkuwi/i18n": path.resolve(__dirname, "../shared/i18n"),
+    },
+  },
+  json: {
+    stringify: true,
+  },
+  assetsInclude: ['**/*.json'],
+}));