chore: Modernize project setup

Update dependencies, move to Gradle KTs and overall improve build and project files.

.gitignore

@@ -1,41 +1,14 @@
-# See https://www.dartlang.org/guides/libraries/private-files
-
-# Files and directories created by pub
-.dart_tool/
-.packages
-build/
-# If you're building an application, you may want to check-in your pubspec.lock
-# pubspec.lock
-
-# Directory created by dartdoc
-# If you don't generate documentation locally you can remove this line.
-doc/api/
-
-# dotenv environment variables file
-.env*
-
-# Avoid committing generated Javascript files:
-*.dart.js
-*.info.json      # Produced by the --dump-info flag.
-*.js             # When generated by dart2js. Don't specify *.js if your
-                 # project includes source files written in JavaScript.
-*.js_
-*.js.deps
-*.js.map
-
-.flutter-plugins
-.flutter-plugins-dependencies
-
-# Generated Builder file
-**/*.g.dart
-**/*.locator.dart
-**/*.router.dart
-
-flutter_*.png
-
-#### Custom
-
-local.properties
+# Miscellaneous
+*.class
+*.log
+*.pyc
+*.swp
+.DS_Store
+.atom/
+.buildlog/
+.history
+.svn/
+migrate_working_dir/
 
 # IntelliJ related
 *.iml
@@ -43,8 +16,39 @@ local.properties
 *.iws
 .idea/
 
-# Node Dependency directories
-node_modules/
+# The .vscode folder contains launch configuration and tasks you configure in
+# VS Code which you may wish to be included in version control, so this line
+# is commented out by default.
+#.vscode/
+
+# Flutter/Dart/Pub related
+**/doc/api/
+**/ios/Flutter/.last_build_id
+.dart_tool/
+.flutter-plugins
+.flutter-plugins-dependencies
+.pub-cache/
+.pub/
+/build/
+
+# Symbolication related
+app.*.symbols
+
+# Obfuscation related
+app.*.map.json
+
+# Android Studio will place build artifacts here
+/android/app/debug
+/android/app/profile
+/android/app/release
+
+# Generated files
+**/*.g.dart
+**/*.locator.dart
+**/*.router.dart
+
+# Project specific
+node_modules/
+.vscode/
+
 
-# FVM
-.fvm