refactor: migrate simpl input to signal

This migrates all inputs to signals
that are not reassigned
and not getter / setter.

The breaking change note also refers to future breaking changes,
so we do not repeat this for every single commit:

BREAKING CHANGE:
Migration to Angular signal inputs/outputs.

All components now use Angular’s `input()`, `model()`, and `output()` functions
instead of the `@Input`/`@Output` decorators. Consider the following
implications for your code:

Template bindings: No changes required! Continue using [inputName] and
(outputName) in templates as before.

Programmatic access: Use template binding whenever possible. If not
possible, understand that setting input values programmatically is only
possible for model() inputs. Reading input values programmatically also
requires adjustments for the signal API:
```ts
class Component {
  @ViewChild(DatatableComponent) private datatableComponent!: DatatableComponent;
  myFunction(): void {
    // Before
    const value = this.datatableComponent.rows;
    // After
    const value = this.datatableComponent.rows();
  }
}
```

If programmatically subscribing to outputs is needed, read the following guide:
https://angular.dev/guide/components/outputs#subscribing-to-outputs-programmatically

Author: spike-rabbit

projects/ngx-datatable/src/lib/components/datatable.component.html

@@ -4,22 +4,22 @@
       <datatable-header
         role="rowgroup"
         [sorts]="sorts"
-        [sortType]="sortType"
-        [scrollbarH]="scrollbarH"
+        [sortType]="sortType()"
+        [scrollbarH]="scrollbarH()"
         [innerWidth]="_innerWidth"
         [offsetX]="_offsetX"
         [dealsWithGroup]="groupedRows !== undefined"
         [columns]="_internalColumns"
         [headerHeight]="headerHeight"
-        [reorderable]="reorderable"
-        [targetMarkerTemplate]="targetMarkerTemplate"
+        [reorderable]="reorderable()"
+        [targetMarkerTemplate]="targetMarkerTemplate()"
         [sortAscendingIcon]="cssClasses.sortAscending"
         [sortDescendingIcon]="cssClasses.sortDescending"
         [sortUnsetIcon]="cssClasses.sortUnset"
         [allRowsSelected]="allRowsSelected"
-        [selectionType]="selectionType"
+        [selectionType]="selectionType()"
         [verticalScrollVisible]="verticalScrollVisible"
-        [enableClearingSortState]="enableClearingSortState"
+        [enableClearingSortState]="enableClearingSortState()"
         [ariaHeaderCheckboxMessage]="messages.ariaHeaderCheckboxMessage ?? 'Select all rows'"
         (sort)="onColumnSort($event)"
         (resize)="onColumnResize($event)"
@@ -35,17 +35,17 @@
       [groupRowsBy]="groupRowsBy"
       [groupedRows]="groupedRows"
       [rows]="_internalRows"
-      [groupExpansionDefault]="groupExpansionDefault"
-      [scrollbarV]="scrollbarV"
-      [scrollbarH]="scrollbarH"
-      [virtualization]="virtualization"
-      [loadingIndicator]="loadingIndicator"
+      [groupExpansionDefault]="groupExpansionDefault()"
+      [scrollbarV]="scrollbarV()"
+      [scrollbarH]="scrollbarH()"
+      [virtualization]="virtualization()"
+      [loadingIndicator]="loadingIndicator()"
       [ghostLoadingIndicator]="ghostLoadingIndicator"
-      [externalPaging]="externalPaging"
+      [externalPaging]="externalPaging()"
       [rowHeight]="rowHeight"
       [rowCount]="rowCount"
       [offset]="offset"
-      [trackByProp]="trackByProp"
+      [trackByProp]="trackByProp()"
       [columns]="_internalColumns"
       [pageSize]="pageSize"
       [offsetX]="_offsetX"
@@ -54,21 +54,21 @@
       [selected]="selected"
       [innerWidth]="_innerWidth"
       [bodyHeight]="bodyHeight"
-      [selectionType]="selectionType"
+      [selectionType]="selectionType()"
       [rowIdentity]="rowIdentity"
-      [rowClass]="rowClass"
-      [selectCheck]="selectCheck"
-      [displayCheck]="displayCheck"
-      [summaryRow]="summaryRow"
-      [summaryHeight]="summaryHeight"
-      [summaryPosition]="summaryPosition"
+      [rowClass]="rowClass()"
+      [selectCheck]="selectCheck()"
+      [displayCheck]="displayCheck()"
+      [summaryRow]="summaryRow()"
+      [summaryHeight]="summaryHeight()"
+      [summaryPosition]="summaryPosition()"
       [verticalScrollVisible]="verticalScrollVisible"
       [ariaRowCheckboxMessage]="messages.ariaRowCheckboxMessage ?? 'Select row'"
       [ariaGroupHeaderCheckboxMessage]="
         messages.ariaGroupHeaderCheckboxMessage ?? 'Select row group'
       "
-      [disableRowCheck]="disableRowCheck"
-      [rowDraggable]="rowDraggable"
+      [disableRowCheck]="disableRowCheck()"
+      [rowDraggable]="rowDraggable()"
       [rowDragEvents]="rowDragEvents"
       [rowDefTemplate]="rowDefTemplate"
       [cssClasses]="cssClasses"
@@ -106,7 +106,7 @@
       [pagerRightArrowIcon]="cssClasses.pagerRightArrow"
       [pagerPreviousIcon]="cssClasses.pagerPrevious"
       [selectedCount]="selected.length"
-      [selectedMessage]="!!selectionType && (messages.selectedMessage ?? 'selected')"
+      [selectedMessage]="!!selectionType() && (messages.selectedMessage ?? 'selected')"
       [pagerNextIcon]="cssClasses.pagerNext"
       (page)="onFooterPage($event)"
     />