feat: Improved UI and added Filters(atkinson and false floyd Steinberg)

[Vishveshwara]

fixes #22

Screenshots:

Changes:

• Added 4 New Filters( False floyd steinberg, atkinson for black/white and black/white/red)
• Added Preview of the filter chosen
• UI improvements

Summary by Sourcery

Enhance image processing and UI for filter selection in the e-paper display application

New Features:

• Added multiple dithering filters for black and white and tri-color image processing
• Implemented a new filter preview and selection interface

Bug Fixes:

• Refactored image processing methods to provide more specific and clear dithering techniques

Enhancements:

• Improved image list and filter selection UI with interactive cards
• Added detailed filter name mapping for better user understanding
• Enhanced preview section with larger image display

[sourcery-ai]

Reviewer's Guide by Sourcery

This pull request introduces new image processing filters (False Floyd-Steinberg and Atkinson), adds a filter preview feature, and improves the UI of the image editor screen. The new filters are added for both black/white and black/white/red image processing. The UI improvements include styling and layout adjustments to enhance the user experience.

No diagrams generated as the changes look simple and do not need a visual representation.

File-Level Changes

Change	Details	Files
Added new image processing filters, including False Floyd-Steinberg and Atkinson dithering, for both black/white and black/white/red image processing.	Added bwFalseFloydSteinbergDither function. Added bwAtkinsonDither function. Added bwrFalseFloydSteinbergDither function. Added bwrTriColorAtkinsonDither function. Added bwNoDither function. Added bwrNoDither function.	lib/util/image_processing/image_processing.dart lib/util/epd/gdey037z03.dart lib/util/epd/gdey037z03bw.dart
Implemented a filter preview feature in the UI, allowing users to see the effect of each filter before applying it.	Added a previewWidget to display the selected filter. Implemented a getFilterNameByIndex method to retrieve the filter name based on its index. Added a filterCards list to display available filters. Added a StatefulWidget to manage the selected filter. Added a GestureDetector to the filter cards to allow the user to select a filter. Added visual feedback to the selected filter card.	lib/view/widget/image_list.dart
Improved the UI of the image editor screen, including styling and layout adjustments.	Changed the background color to white. Updated the AppBar with a centered title and adjusted styling. Added padding to the main content area. Modified the 'Import Image' button style. Adjusted the layout of the filter selection area.	lib/view/image_editor.dart lib/view/widget/image_list.dart

Assessment against linked issues

Issue	Objective	Addressed	Explanation

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[sourcery-ai]

Hey @Vishveshwara - I've reviewed your changes - here's some feedback:

Overall Comments:

• Consider extracting the filter selection logic into a separate widget for better organization.
• The filter name mapping could be moved to the ImageProcessing class to keep related logic together.

Here's what I looked at during the review

• 🟢 General issues: all looks good
• 🟢 Security: all looks good
• 🟢 Testing: all looks good
• 🟢 Complexity: all looks good
• 🟢 Documentation: all looks good

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[Vishveshwara]

@kienvo @AsCress can you please review this? I haven't changed the internal logic of how filters are handled, if you guys have any suggestions to improve please suggest them.

[mariobehling]

Please resolve conflicts. Thanks!

[Vishveshwara]

@AsCress @Jhalakupadhyay can you please review this pr

[AsCress]

@Vishveshwara Please resolve conflicts here.
@kienvo Are we aligned on this ? Is this addition good to go ?

[kienvo]

Rebasing. Good to go.

[AsCress]

Good to go from my side as well.