Remove diacritics from strings in search

Close #181

ktx/build.gradle.kts

@@ -41,5 +41,6 @@ dependencies {
     implementation(libs.tinypinyin)
     implementation(libs.androidx.appcompat)
     implementation(libs.bundles.androidx.lifecycle)
+    implementation(libs.commons.text)
 
 }

ktx/src/main/java/de/mm20/launcher2/ktx/String.kt

@@ -1,6 +1,7 @@
 package de.mm20.launcher2.ktx
 
 import com.github.promeg.pinyinhelper.Pinyin
+import org.apache.commons.lang3.StringUtils
 import java.net.URLDecoder
 import java.util.*
 
@@ -13,7 +14,7 @@ fun String.decodeUrl(charset: String): String? {
  * TODO: Only supports Chinese/Pinyin at the moment
  */
 fun String.normalize(): String {
-    return this.romanize().lowercase(Locale.getDefault())
+    return StringUtils.stripAccents(this.romanize().lowercase(Locale.getDefault()))
 }
 
 /**