Add xterm itegration

* Move to TypeScript from legacy JavaScript
* Add support of xterm.js
* Hterm is still available for backward compatibility

js/dist/webtty.d.ts

@@ -0,0 +1,48 @@
+export declare const protocols: string[];
+export declare const msgInputUnknown = "0";
+export declare const msgInput = "1";
+export declare const msgPing = "2";
+export declare const msgResizeTerminal = "3";
+export declare const msgUnknownOutput = "0";
+export declare const msgOutput = "1";
+export declare const msgPong = "2";
+export declare const msgSetWindowTitle = "3";
+export declare const msgSetPreferences = "4";
+export declare const msgSetReconnect = "5";
+export interface Terminal {
+    info(): {
+        columns: number;
+        rows: number;
+    };
+    output(data: string): void;
+    showMessage(message: string, timeout: number): void;
+    removeMessage(): void;
+    setWindowTitle(title: string): void;
+    setPreferences(value: object): void;
+    onInput(callback: (input: string) => void): void;
+    onResize(callback: (colmuns: number, rows: number) => void): void;
+    reset(): void;
+    deactivate(): void;
+    close(): void;
+}
+export interface Connection {
+    open(): void;
+    close(): void;
+    send(data: string): void;
+    isOpen(): boolean;
+    onOpen(callback: () => void): void;
+    onReceive(callback: (data: string) => void): void;
+    onClose(callback: () => void): void;
+}
+export interface ConnectionFactory {
+    create(): Connection;
+}
+export declare class WebTTY {
+    term: Terminal;
+    connectionFactory: ConnectionFactory;
+    args: string;
+    authToken: string;
+    reconnect: number;
+    constructor(term: Terminal, connectionFactory: ConnectionFactory, args: string, authToken: string);
+    open(): () => void;
+}