Cloud Storage: Add image/video/file storage implementation

[sbis04]

Add functionality for retrieving an image, video, or other files from the device storage and upload it to Cloud Storage. Use the generated URL to provide an option to download the file on the second page.

So, there would be two pages basically:

• First Page to select and upload a file from the device
• Second Page to download the file to the device

Please try to maintain similar theming across the pages, though there aren't any concrete theming guidelines for this contribution but keep this in mind for future-proofing this contribution.

Use the correct folder structure for adding the functionality, have a look at the readme and the project lib folder structure to understand the proper folder structure to follow. Each functionality is under its own category and consists mainly of screens, utils, and widgets folders.

NOTE: You need to create your own Firebase project and configure it before starting to contribute, make sure you read the CONTRIBUTING guidelines.

Assume the Cloud Storage rule to be open to everyone (even without auth) for this demo.

More info: https://firebase.google.com/docs/storage/flutter/start
Package to use: https://pub.dev/packages/firebase_storage

Hacktoberfest 2022 Note: There's no assignment of issues (first come, first review basis), all eligible contributions will be given “hacktoberfest-accepted” label to make it count towards the Hacktoberfest contribution, even if it's not merged.

[Engr-Owais]

I am open to work on it

[sbis04]

Nice, you can start working on this @Engr-Owais. Looking forward to your PR!

[rktejesh]

Hey @sbis04
Can I work on this?

[sbis04]

Yes, you can work on this @rktejesh. All issues are open to everyone.