feat: Add retry button in case of Internet Error

[danagbemava]

What

• This PR adds a retry button to the SmoothProductCardError widget.

Video

telegram-cloud-document-4-5780477560336944279.mp4

Fixes bug(s)

• Add a "Refresh" button on the scan card, in case of Internet error #891

Part of

• 🎯 What can I work on ? #525
  (please be as granular as possible)

[monsieurtanuki]

Looks good to me @danagbemava!

Several remarks though:

• perhaps renaming your PR "feat: " instead of "[feat] " would be more git-effective - to be confirmed by @M123-dev
• while you're here, you could make setBarcodeState private (as _setBarcodeState)
• I believe you should create branches instead of coding directly on develop. But I'm not an expert on git. Really not.
• The icing on the cake would be to check the network availability - I'm not even talking of callbacks when the connection is up again - like before suggesting a refresh to the end-user, check the network first. Not in this PR. We can see later if we need to spend time on this feature.

[M123-dev]

Thanks a lot @danagbemava, the code looks good.

To what @monsieurtanuki said, yes we follow the convention for naming feat: / fix: / ... so that they get picked up by a intigration which automatically creates the changelog (#962) , but that's just a minor detail.

[danagbemava]

Thanks for the feedback.

while you're here, you could make setBarcodeState private (as _setBarcodeState)
✅

I believe you should create branches instead of coding directly on develop

I had considered this, but I didn't envision this PR to touch a lot of files in my initial thought process, but I'll keep that in mind for future contributions.

The icing on the cake would be to check the network availability - I'm not even talking of callbacks when the connection is up again - like before suggesting a refresh to the end-user, check the network first. Not in this PR. We can see later if we need to spend time on this feature.

I considered something similar, where I would check the network state and show an error Snackbar in case the network wasn't available and make the request if it was available but I was just finding my way around the codebase (still exploring it now) and I wanted to get my feet wet. I'll keep that in mind as something to implement in the future.

[M123-dev]

Thanks @danagbemava I've just merged your pull request, it is now integrated to the develop branch 🥳