refactor: strings.xml, ScanFragment.kt, destroy binding, remove unnecessary variable, use application context in MainActivity.kt, add monochrome setup for icon

Feat/settings feature

See merge request !15

Add dev commits to feat/SettingsFeature

See merge request !14

# Conflicts:
#   app/src/main/AndroidManifest.xml
#   app/src/main/java/com/example/myapplication/MainActivity.kt

feat: upload Bills

See merge request !11

Feat/background service

See merge request !9

Transaction

See merge request !8

# Conflicts:
#   app/build.gradle.kts
#   app/src/main/AndroidManifest.xml
#   app/src/main/java/com/example/myapplication/MainActivity.kt
#   app/src/main/res/layout/activity_main.xml
#   app/src/main/res/values/strings.xml

feat: scan page

See merge request !7

# Conflicts:
#   app/src/main/res/values/strings.xml

feat: add settings ui, logout alert, save dialog, file format enum, and DialogController

See merge request !6

Feat/navbar

See merge request !5

# Conflicts:
#   app/src/main/res/layout/activity_main.xml
#   app/src/main/res/values/themes.xml

feat: add Statistics Fragment

See merge request !4

feat : add statistics

See merge request !3

# Conflicts:
#   app/src/main/java/com/example/myapplication/MainActivity.kt
#   app/src/main/res/values/strings.xml