Add documentation for form controls, layout components, and application setup

- Introduced `form-controls.md` detailing Input Group, Combo, Select, Date/Time Pickers, Calendar, Checkbox, Radio, Switch, Slider, and Reactive Forms integration.
- Created `layout-manager.md` covering Layout Manager and Dock Manager with usage examples and key rules.
- Added `layout.md` for Tabs, Bottom Navigation, Stepper, Accordion, Splitter, and Navigation Drawer components.
- Established `setup.md` for application setup, required providers, and architecture for standalone components.

Author: zdrawku

.github/copilot-instructions.md

@@ -118,7 +118,6 @@ Here is a link to the most recent Angular style guide https://angular.dev/style-
 
 Domain-specific skills for AI-assisted development are located in the [`skills/`](../skills/) directory. Each sub-folder contains a `SKILL.md` file that teaches agents how to work with a particular area of the library:
 
-- [`skills/igniteui-angular-components`](../skills/igniteui-angular-components/SKILL.md) — Components — Form Controls (Input Group, Combo, Select, Date/Time Pickers, Calendar, forms integration)
-- [`skills/igniteui-angular-components-layout`](../skills/igniteui-angular-components-layout/SKILL.md) — Components — Layout & Display (Tabs, Stepper, Accordion, List, Card, Dialog, Snackbar, directives)
+- [`skills/igniteui-angular-components`](../skills/igniteui-angular-components/SKILL.md) — UI Components (form controls, layout, data display, feedback/overlays, directives — Input Group, Combo, Select, Date/Time Pickers, Calendar, Tabs, Stepper, Accordion, List, Card, Dialog, Snackbar, Button, Ripple, Tooltip, Drag and Drop, Layout Manager, Dock Manager)
 - [`skills/igniteui-angular-grids`](../skills/igniteui-angular-grids/SKILL.md) — Data Grids (grid type selection, column config, sorting, filtering, selection, editing, grouping, paging, remote data, state persistence, Tree Grid, Hierarchical Grid, Grid Lite, Pivot Grid)
 - [`skills/igniteui-angular-theming`](../skills/igniteui-angular-theming/SKILL.md) — Theming & Styling (includes MCP server setup)