Simplify network layer (#175)

* Use Ktor for network requests

* Remove V0 version

* Remove Retrofit dependency

* Fix url

* Update versions of dependencies

* Revert kotlinx-datetime

Due to https://github.com/Kotlin/kotlinx-datetime/issues/304

* Rename leftovers

* Remove OkHttp

* Remove unused manifest

* Remove unused Hilt module

* Fix building empty image URLs

* Use OkHttp as engine for Ktor

* Reduce visibility of internal classes

* Fix first set up test

* Store only auth token, not header

* Remove UnitInfo/FoodInfo/VersionInfo/NewShoppingListItemInfo

* Remove RecipeSummaryInfo and ShoppingListsInfo

* Remove FullShoppingListInfo

* Remove ParseRecipeURLInfo

* Remove FullRecipeInfo

* Sign out if access token does not work

* Rename getVersionInfo method

* Update version name

app/build.gradle.kts

@@ -16,8 +16,8 @@ plugins {
 android {
     defaultConfig {
         applicationId = "gq.kirmanak.mealient"
-        versionCode = 30
-        versionName = "0.4.1"
+        versionCode = 31
+        versionName = "0.4.2"
         testInstrumentationRunner = "gq.kirmanak.mealient.MealientTestRunner"
         testInstrumentationRunnerArguments += mapOf("clearPackageData" to "true")
         resourceConfigurations += listOf("en", "es", "ru", "fr", "nl", "pt", "de")
@@ -55,7 +55,7 @@ android {
 
     namespace = "gq.kirmanak.mealient"
 
-    packagingOptions {
+    packaging {
         resources.excludes += "DebugProbesKt.bin"
     }