feat(translations): multiple improvements (read desc)

- added deepl support for translations
- cache translations
- added support for streaming translations from LLMs
- removed mlkit dependency and auto-translate settings (fix izzy)
- added a manual translation button
- added explainations for providers and translation mode

Author: nyxiereal

app/build.gradle.kts

@@ -297,6 +297,5 @@ dependencies {
 
     coreLibraryDesugaring(libs.desugaring)
 
-    implementation(libs.mlkit.language.id)
     implementation(libs.timber)
 }