feat(cdk/table): allow text column to be centered (#24133)

Allows for the text inside a text column to be centered.

Fixes #23920.

Author: crisbeto

src/cdk/table/text-column.ts

@@ -85,7 +85,7 @@ export class CdkTextColumn<T> implements OnDestroy, OnInit {
   @Input() dataAccessor: (data: T, name: string) => string;
 
   /** Alignment of the cell values. */
-  @Input() justify: 'start' | 'end' = 'start';
+  @Input() justify: 'start' | 'end' | 'center' = 'start';
 
   /** @docs-private */
   @ViewChild(CdkColumnDef, {static: true}) columnDef: CdkColumnDef;

tools/public_api_guard/cdk/table.md

@@ -385,7 +385,7 @@ export class CdkTextColumn<T> implements OnDestroy, OnInit {
     dataAccessor: (data: T, name: string) => string;
     headerCell: CdkHeaderCellDef;
     headerText: string;
-    justify: 'start' | 'end';
+    justify: 'start' | 'end' | 'center';
     get name(): string;
     set name(name: string);
     // (undocumented)