feat: add user testing plan for SafeBite app

- Created a comprehensive user testing plan document to validate the app's usability, reliability, accessibility, and resilience.
- Included various test scenarios covering onboarding, product scanning, manual barcode entry, and accessibility features.

chore: update dependencies for code quality tools

- Added ktlint version 12.2.0 for Kotlin code style enforcement.
- Added detekt version 1.23.7 for static code analysis.

chore: increment version numbers

- Updated MINOR version to 32 and CODE to 43 in version.properties to reflect recent changes.

.editorconfig

@@ -0,0 +1,9 @@
+# SafeBite — Ktlint configuration
+# https://pinterest.github.io/ktlint/latest/rules/configuration-ktlint/
+
+[*.kt]
+# Disable function naming check — Compose @Composable functions use PascalCase
+ktlint_standard_function-naming = disabled
+
+# Max line length
+ktlint_standard_max-line-length = disabled