Initialize TypeScript library for Telegram Web App wallet integration

- Added configuration files: .eslintrc.js, .gitignore, .npmrc, .prettierrc, and multiple tsconfig files for different module systems.
- Created package.json with dependencies and scripts for building, testing, and publishing.
- Implemented core functionality in src/ directory, including wallet management, encryption, and storage handling.
- Added README.md for documentation on installation, usage, and development setup.
- Introduced initial types and constants for better type safety and code organization.

src/types.ts

@@ -0,0 +1,44 @@
+import { default as WebAppConst } from "@twa-dev/sdk";
+import type { InjectedWindow } from "@polkadot/extension-inject/types";
+
+declare global {
+    interface Window extends InjectedWindow {}
+}
+
+export type WalletStorage = Storage & {
+    subscribe: (cb: (ev: StorageEvent) => void) => void;
+}
+
+export type InjectionConfig = {
+    callbackUrl: string;
+    isDev?: boolean;
+    connectTimeout?: number;
+    storage?: WalletStorage;
+}
+
+export type WebApp = typeof WebAppConst;
+export interface ConnectRequest {
+    method: 'connect';
+    callback: string;
+}
+  
+export interface SignTransactionRequest {
+    method: 'signTransaction';
+    id: number;
+    tx: string;
+    wallet: string;
+    callback: string;
+}
+  
+export interface ConnectResult {
+    success: boolean;
+    wallets?: string[];
+    error?: string;
+}
+  
+export interface SignTransactionResult {
+    success: boolean;
+    id: number;
+    signedTx?: string;
+    error?: string;
+}