Add release and correct multidex

src/app/build.gradle

@@ -14,8 +14,8 @@ android {
         targetSdk 32
         versionCode 1
         versionName "1.0"
-
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+        multiDexEnabled = true
     }
 
     buildTypes {

src/app/src/main/java/uca/iut/clermont/view/FavoriteFragment.kt

@@ -16,7 +16,6 @@ import androidx.recyclerview.widget.RecyclerView
 import uca.iut.clermont.R
 import uca.iut.clermont.application.ScorItApplication
 import uca.iut.clermont.model.Competition
-import uca.iut.clermont.model.Match
 import uca.iut.clermont.view.adapter.CompetitionsAdapter
 import uca.iut.clermont.view.viewModel.FavoriteViewModel
 import uca.iut.clermont.view.viewModel.ViewModelFactory