* refactor: code cleanup

* Bump flutter_lints from 2.0.3 to 3.0.1 (#5)

Bumps [flutter_lints](https://github.com/flutter/packages/tree/main/packages) from 2.0.3 to 3.0.1.
- [Release notes](https://github.com/flutter/packages/releases)
- [Commits](https://github.com/flutter/packages/commits/flutter_lints-v3.0.1/packages)

---
updated-dependencies:
- dependency-name: flutter_lints
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

* Update README.md (#7)

* configure multiple Firebase environments for development, staging, and production

* added Google service files for multiple flavours

* fix: Xcode Cloud build from Flutter project unable to find included file 'Generated.xcconfig' in search paths

* update google-service.plist path

* Update README.md

* Update README.md

* Update README.md

* Update README.md

* Update README.md

* update android config to fix build

* update ios config to fix build

* add app's launcher icon

* add launch image

* fix: Resolve issue preventing Android launch

* change ios app name to DevFin for release build

* update to recommended Pods Settings

* updated podfile

* set pods deployment target to iOS 12

---------

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>