feat(Session): Add configInfo to InnerTube context

Minor addition. It's needed for certain UMP requests.

src/core/Session.ts

@@ -59,6 +59,9 @@ export type Context = {
       isWebNativeShareAvailable: boolean;
     };
     memoryTotalKbytes?: string;
+    configInfo?: {
+      appInstallData: string;
+    },
     kidsAppInfo?: {
       categorySettings: {
         enabledCategories: string[];
@@ -97,6 +100,7 @@ type ContextData = {
   enable_safety_mode: boolean;
   browser_name?: string;
   browser_version?: string;
+  app_install_data?: string;
   device_make: string;
   device_model: string;
   on_behalf_of_user?: string;
@@ -435,6 +439,9 @@ export default class Session extends EventEmitter {
 
     const [ [ device_info ], api_key ] = ytcfg;
 
+    const config_info = device_info[61];
+    const app_install_data = config_info[config_info.length - 1];
+
     const context_info = {
       hl: options.lang || device_info[0],
       gl: options.location || device_info[2],
@@ -450,6 +457,7 @@ export default class Session extends EventEmitter {
       browser_version: device_info[87],
       device_make: device_info[11],
       device_model: device_info[12],
+      app_install_data: app_install_data,
       enable_safety_mode: options.enable_safety_mode
     };
 
@@ -499,6 +507,9 @@ export default class Session extends EventEmitter {
       }
     };
 
+    if (args.app_install_data)
+      context.client.configInfo = { appInstallData: args.app_install_data };
+
     if (args.on_behalf_of_user)
       context.user.onBehalfOfUser = args.on_behalf_of_user;