Nodepools, apt-packages for Notebooks, UI Improvements and Bug fixes

New Features & Improvements:

• Added apt build options for Notebook
• Added nodepools in deployment forms - Now you can configure and use your pre-existing nodepools with applications
• Added a message to prompt the user to fill up values with <to_be_provided> in the helm deployment
• Added a button highlight on events button if the latest event is an error.
• Added validation on image type in the deployment form
• Added task-based filtering in the model catalogue
• Added support to allow replicas to go to 0 for a service deployment
• Changed intercepts position to the advanced section in the service deployment form

Bug fixes:

• Fixed the issue where GPU metrics legend repeats when changing time windows
• Fixed crashing issue post installation of application on clusters