Calendar: Add additional keyboard support

[barbGit2]

Describe the bug

Add the following keyboard support to the Calendar for the following Keyboard event code(s):

• Home moves focus to the cell representing the first day of the currently displayed month.
• End: moves focus to the cell representing the last day of the currently displayed month.
• PageUp: moves to the same date in the previous month.
• PageDown: moves to the same date in the next month.

This is based on WAI-ARIA grid and The Accessibility Cookbook Technique: Date and date range pickers

Environment

Linux

Reproducer

No response

Angular version

16

PrimeNG version

16.9.1 and master

Build / Runtime

Angular CLI App

Language

TypeScript

Node version (for AoT issues node --version)

16.20.2

Browser(s)

Chrome 122.0.6261.94

Steps to reproduce the behavior

The Calendar does not support the Keyboard event codes: 'Home', 'End', 'PageUp', 'PageDown'

Expected behavior

When using the Calendar component, the following keyboard events are supported:

• Home moves focus to the cell representing the first day of the currently displayed month.
• End: moves focus to the cell representing the last day of the currently displayed month.
• PageUp: moves to the same date in the previous month.
• PageDown: moves to the same date in the next month.