Objectbox (#400)

* replaced SQLite/RoomDb with Objectbox for improved dictionary performance

* SQLite words are automatically cleaned up when opening the Preferences

* added protection against deleting dictionaries while loading other dictionaries

* enabled adding words with apostrophes in Ukrainian

* updated system requirements

build.gradle

@@ -9,10 +9,13 @@ buildscript {
 	dependencies {
 		classpath 'com.android.tools.build:gradle:8.0.2'
 		classpath 'gradle.plugin.at.zierler:yaml-validator-plugin:1.5.0'
+		classpath("io.objectbox:objectbox-gradle-plugin:3.7.1")
 	}
 }
+
 apply plugin: 'com.android.application'
 apply plugin: 'at.zierler.yamlvalidator'
+apply plugin: "io.objectbox"
 
 apply from: 'gradle/scripts/constants.gradle'
 apply from: 'gradle/scripts/dictionary-tools.gradle'
@@ -20,10 +23,6 @@ apply from: 'gradle/scripts/validate-languages.gradle'
 apply from: 'gradle/scripts/version-tools.gradle'
 
 configurations.configureEach {
-	// fixes 'duplicate class error', when using these combine: androidx.core:1.10.1, androidx.preference:1.2.0 and androidx.room:2.5.1
-	// see: https://stackoverflow.com/questions/75274720/a-failure-occurred-while-executing-appcheckdebugduplicateclasses/75315276#75315276
-	exclude group: 'org.jetbrains.kotlin', module: 'kotlin-stdlib-jdk8'
-
 	yamlValidator {
 		searchPaths = ['languages/definitions']
 	}
@@ -32,8 +31,10 @@ configurations.configureEach {
 dependencies {
 	implementation 'androidx.core:core:1.10.1'
 	implementation 'androidx.preference:preference:1.2.1'
-	implementation 'androidx.room:room-runtime:2.5.2'
-	annotationProcessor 'androidx.room:room-compiler:2.5.2'
+
+	// fixes 'duplicate class error' when using "androidx.core" > 1.9.0
+	// see: https://stackoverflow.com/a/77323424
+	implementation(platform("org.jetbrains.kotlin:kotlin-bom:1.8.0"))
 }
 
 repositories {