add dashboard and navigation menu

app/src/main/java/sh/sar/basedbank/BasedBankApp.kt

@@ -1,6 +1,7 @@
 package sh.sar.basedbank
 
 import android.app.Application
+import androidx.appcompat.app.AppCompatDelegate
 import com.google.android.material.color.DynamicColors
 import sh.sar.basedbank.api.mib.MibAccount
 
@@ -13,5 +14,12 @@ class BasedBankApp : Application() {
     override fun onCreate() {
         super.onCreate()
         DynamicColors.applyToActivitiesIfAvailable(this)
+
+        val theme = getSharedPreferences("prefs", MODE_PRIVATE).getString("theme", "system")
+        AppCompatDelegate.setDefaultNightMode(when (theme) {
+            "dark" -> AppCompatDelegate.MODE_NIGHT_YES
+            "light" -> AppCompatDelegate.MODE_NIGHT_NO
+            else -> AppCompatDelegate.MODE_NIGHT_FOLLOW_SYSTEM
+        })
     }
 }