feat: port classification module to C++ (#363)

## Description

Port classification module to native C++ code.

### Type of change

- [ ] Bug fix (non-breaking change which fixes an issue)
- [x] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing
functionality to not work as expected)
- [ ] Documentation update (improves or adds clarity to existing
documentation)

### Tested on

- [x] iOS
- [x] Android

### Related issues

#255 #257

### Checklist

- [x] I have performed a self-review of my code
- [x] I have commented my code, particularly in hard-to-understand areas
- [ ] I have updated the documentation accordingly
- [x] My changes generate no new warnings

Author: JakubGonera

apps/computer-vision/screens/ClassificationScreen.tsx

@@ -34,9 +34,9 @@ export const ClassificationScreen = ({
       try {
         const output = await model.forward(imageUri);
         const top10 = Object.entries(output)
-          .sort(([, a], [, b]) => b - a)
+          .sort(([, a], [, b]) => (b as number) - (a as number))
           .slice(0, 10)
-          .map(([label, score]) => ({ label, score }));
+          .map(([label, score]) => ({ label, score: score as number }));
         setResults(top10);
       } catch (e) {
         console.error(e);