Volume conversion tool

# Create a Volume conversion tool in html,css and javascript.

- Add navbar in your tool's html file. You can copy the navbar from index.html.
- Add screenshot of your tool in, PR message and also in the folder of your tool
- Before Making the PR Pull the latest changes that have been made to the repository

**Note: Please Don't Make Any Changes In `index.html` AND `contributors.html` **
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## Add the below mention section to your PR message

## Title

## Number of files/folder added

## changes made

## I have;

- [ ] Read contibuting.md
- [ ] Followed all the guidelines
- [ ] updated readme.md
- [ ] add your name in the footer of your tool.html file (if you created length conversion tool then add your name to length.html
file you created)

Start by reading index.html for the navbar and contributing.md for repository guidance, then inspect existing conversion tools to follow their structure. Create the volume conversion tool in HTML, CSS, and JavaScript without changing index.html or contributors.html; it is done when the tool works, includes the required navbar and contributor name, and has a screenshot in the tool folder and PR message.

由索引模型根据 Issue 内容生成。