Jetbrains docs (#5948)

* docs: Update Claude Code documentation to include Pro plans alongside Max plans

* Add JetBrains installation documentation

- Create comprehensive installation guide for JetBrains IDEs
- Include both marketplace and manual installation methods
- Document supported IDEs and key differences from VSCode
- Add alpha status note and terminal integration limitations
- Update docs.json navigation to include new page

* Add images to JetBrains installation documentation

- Add demo GIF showing Cline in action in JetBrains IDE
- Add screenshot of JetBrains marketplace download page
- Add screenshot of Install Plugin from Disk dialog
- Add screenshot of file selection dialog with zip file
- Complete visual walkthrough of installation process

* Update JetBrains demo to high-quality GIF

- Replace jetbrains-demo.gif with jetbrains-demo-hifi.gif
- Improved visual quality for better user experience

* Add JetBrains settings dialog screenshot

- Add screenshot showing the main settings dialog
- Provides visual guidance for accessing IDE settings
- Complete visual walkthrough now includes 5 screenshots

* Add JetBrains logo and finalize documentation

- Add JetBrains logo at top of page with proper styling
- Update content with user revisions (BYOK note, streamlined structure)
- Complete visual installation walkthrough with 5 images
- Ready for PR review

docs/docs.json

@@ -60,6 +60,7 @@
 					"getting-started/what-is-cline",
 					"getting-started/model-selection-guide",
 					"getting-started/installing-cline",
+					"getting-started/installing-cline-jetbrains",
 					"getting-started/task-management",
 					"getting-started/understanding-context-management",
 					{