learn/guides => new learning path structure

The folder contains too many items now, so we need grouping.

1. Fundamentals & Core Concepts:

   • Application Bootstrap
   • Instance Lifecycle
   • Declarative Component Trees VS Imperative Vdom (Moved up significantly)
   • Config System Deep Dive
   • Extending Neo Classes
   • Main Thread Addons: Interacting with the Browser

2. UI Building Blocks:

   • Component and Container Basics
   • Layouts
   • Custom Components
   • Working with VDom (Still relevant here for deeper dives, but the high-level concept is covered earlier)

3. Data Handling:

   • Collections
   • Records
   • Grids
   • Tables (Stores) (Still hidden, but logically grouped)
   • Shared Bindable Data (State Providers) (Moved up, as it's fundamental to reactive data flow)

4. User Interaction & Advanced Features:

   • User Input (Forms)
   • Form Fields (Specific form field types)
   • Events (Custom Events, DOM Events)

5. Specific Applications/Features:

   • Multi-Window Applications (Still hidden)
   • Mixins (Still hidden)
   • Portal App (At the very bottom, as discussed)