chore: add registerCommand function helper

Author: karthiknadig

src/common/command.api.ts

@@ -1,5 +1,10 @@
 /* eslint-disable @typescript-eslint/no-explicit-any */
 import { commands } from 'vscode';
+import { Disposable } from 'vscode-jsonrpc';
+
+export function registerCommand(command: string, callback: (...args: any[]) => any, thisArg?: any): Disposable {
+    return commands.registerCommand(command, callback, thisArg);
+}
 
 export function executeCommand<T = unknown>(command: string, ...rest: any[]): Thenable<T> {
     return commands.executeCommand(command, ...rest);