Script for Changing Wallpapers based on TOD

### Description

Main aim here is to write a script to change wallpapers on the home screen of an Ubuntu(any Debian-based Linux Distro), based on the time of day.
Any scripting language can be used for this task - Eg: python, bash, Ruby, etc.
As soon as user switches on his/her system a wallpaper should be displayed that corresponds to current TOD, and should be updated as the day progresses.
Special task : Figure out the crontab config (if required) for above script, if any is needed.

### Details
- Technical Specifications:
- Any Scripting Language
- Type of issue: Single.
- Time Limit: 24 hours(from the moment a user is assigned this issue).

### Resources
List of resources that might be required / helpful.
- https://www.digitalocean.com/community/tutorials/how-to-use-cron-to-automate-tasks-ubuntu-1804
- https://linuxconfig.org/bash-scripting-tutorial
- https://www.geeksforgeeks.org/os-module-python-examples/

### Directory Structure
Create a folder named Linux_Script_Wallpaper_Switcher in the Development folder. File should be named as wallpaper_script.[py,sh,rb].

#### Note
1. Please claim the issue first by commenting here before starting to work on it.
2. Once you are done with the task and have created a Pull Request, please tag @ikjot-2605 to request a review.

Create Development/Linux_Script_Wallpaper_Switcher and use the requested wallpaper_script.py, .sh, or .rb entry point. Start with the linked cron and scripting resources, then determine whether crontab is needed. Done means the script selects a wallpaper for the current time of day at system startup and updates it as the day progresses.

Written by the indexing model from the issue text.