chore: bump version to 0.6.2rc4 for nodetool apps, electron, and web

- Updated version number to 0.6.2rc4 in package.json files for nodetool-apps, nodetool-electron, and nodetool web.
- This release includes pre-release changes and improvements across the applications.

Author: georgi

apps/package.json

@@ -1,6 +1,6 @@
 {
   "name": "nodetool-apps",
-  "version": "0.6.0",
+  "version": "0.6.2rc4",
   "description": "Personalized apps for Nodetool",
   "homepage": "https://nodetool.ai",
   "scripts": {
@@ -66,4 +66,4 @@
     "type": "git",
     "url": "https://github.com/nodetool-ai/nodetool.git"
   }
-}
+}

electron/package.json

@@ -1,6 +1,6 @@
 {
   "name": "nodetool-electron",
-  "version": "0.6.0",
+  "version": "0.6.2rc4",
   "description": "node-based AI development tool",
   "homepage": "https://nodetool.ai",
   "main": "dist-electron/main.js",

web/package.json

@@ -1,6 +1,6 @@
 {
   "name": "nodetool",
-  "version": "0.6.0",
+  "version": "0.6.2rc4",
   "private": true,
   "type": "module",
   "dependencies": {