Added a basic data download button

[anvithagowda098]

• This pull request is on a separate branch and not the main branch
• [] I have tested my code with the xcodebuild and swiftlint --strict commands as directed in the testing section of the contributing guide

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Description

Created a basic button for download data and linked it to DownloadDataVC. Button is yet to be linked to the storyboard.

Related issue

#334

• #ISSUE_NUMBER: 334

[github-actions]

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[github-actions]

Maintainer Checklist

The following is a checklist for maintainers to make sure this process goes as well as possible. Feel free to address the points below yourself in further commits if you realize that actions are needed :)

• The linting and formatting workflows within the PR checks do not indicate new errors in the files changed

• The CI unit test workflows within the PR checks do not indicate new errors in the files changed

• The CHANGELOG has been updated with a description of the changes for the upcoming release and the corresponding issue (if necessary)

[github-actions]

First PR Commit Check

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