feat: implement app-wide error tracking with Sentry (#20)

[Francis6-git]

Description:
This PR addresses issue #20 . I Integrated @sentry/react-native across the entire StepFi app to capture unhandled errors, attach user context on wallet connect, log breadcrumbs in all service calls, and configure source map uploads for production EAS builds.

Closes #20

[EmeditWeb]

@Francis6-git fix Merge conflict

[EmeditWeb]

@Francis6-git fix merge conflict

[Francis6-git]

@Francis6-git fix merge conflict

I'm on it

[Francis6-git]

I would appreciate if you please review and merge this PR. @EmeditWeb

[EmeditWeb]

Push an empty commit to trigger CI:
git commit --allow-empty -m "chore: trigger CI"
git push origin your-branch-name

[Francis6-git]

Push an empty commit to trigger CI: git commit --allow-empty -m "chore: trigger CI" git push origin your-branch-name

Okay, on it

[Francis6-git]

Push an empty commit to trigger CI: git commit --allow-empty -m "chore: trigger CI" git push origin your-branch-name

Done, please review.