Software Testing topic added in topic

[karthi9772]

Proposed changes

Added a new section on Software Testing to provide comprehensive coverage of testing methodologies, including manual and automation testing. This includes explanations on white box testing, black box testing, and the use of Selenium WebDriver for automated testing.

Types of changes

What types of changes does your content introduce to this project?

• [x] New content (new section, new readme, etc.)

Checklist

• [x] Tested any code that was added/modified in this PR
• [ ] Added external links
• [ ] Added internal links
• [ ] Added images
• [ ] Added videos
• [ ] Added code snippets

Further comments

This PR introduces essential concepts of software testing to enhance the project's documentation, aiming to provide clarity and guidance to users and contributors. The use of Selenium WebDriver is highlighted to demonstrate practical implementation of automation testing.

[the-label-bot[bot]]

The Label Bot has predicted the following:

Category	Value	Confidence	Applied Label
Kind	documentation	0.913	:heavy_check_mark:
Size	XL	0.831	:heavy_check_mark: