lots of background work for manga extensions

app/src/main/java/eu/kanade/domain/base/BasePreferences.kt

@@ -0,0 +1,30 @@
+package eu.kanade.domain.base
+
+import android.content.Context
+import android.content.pm.PackageManager
+import android.os.Build
+import tachiyomi.core.preference.PreferenceStore
+
+class BasePreferences(
+    val context: Context,
+    private val preferenceStore: PreferenceStore,
+) {
+
+    fun confirmExit() = preferenceStore.getBoolean("pref_confirm_exit", false)
+
+    fun downloadedOnly() = preferenceStore.getBoolean("pref_downloaded_only", false)
+
+    fun incognitoMode() = preferenceStore.getBoolean("incognito_mode", false)
+
+    fun extensionInstaller() = ExtensionInstallerPreference(context, preferenceStore)
+
+    fun acraEnabled() = preferenceStore.getBoolean("acra.enable", true)
+
+    fun deviceHasPip() = Build.VERSION.SDK_INT >= Build.VERSION_CODES.O && context.packageManager.hasSystemFeature(PackageManager.FEATURE_PICTURE_IN_PICTURE)
+
+    enum class ExtensionInstaller(val titleResId: String) {
+        LEGACY("Legacy"),
+        PACKAGEINSTALLER("PackageInstaller"),
+        SHIZUKU("Shizuku"),
+    }
+}