Image Analysis improvements

[apalala-dev]

Description

This PR follows analysis improvements of #213.

Other features are still needed:

Feature	Android	iOS
Determine if the device is capable of doing both imageAnalysis and video recording at the same time	✅	✅
Determine if the device is capable of doing imageAnalysis and taking pictures at the same time	✅	✅
Provide a way to display the image analysis in Flutter. This will probably be implemented by providing methods to convert analysis images to JPEG.	✅	✅

On Android, there is a notion of level to know if a device can do image analysis and video recording/taking pictures at the same time:

On iOS, there is no "Analysis mode" at all, we simply return an image stream & allow user to perform action on it.

These features should address a few issues we have atm: #206, #209, #208

Closes #271

Checklist

Before creating any Pull Request, confirm that it meets all requirements listed below by checking the relevant checkboxes ([x]).

• [x] 📕 I read the Contributing page.
• [x] 🤝 I match the actual coding style.
• [x] ✅ I ran flutter analyze without any issues.

Breaking Change

• [ ] 🛠 My feature contain breaking change.

If your feature break something, please detail it

[istornz]

@apalala-dev I added native conversion on iOS