Implement month separator for the Gallery.

Improve day separator rendering in the timeline.
Use Today, Yesterday, and the name of the day if less than 7 days and do not render the year for the current year.
Improve date format for the media viewer.
Rework how date and time are computed.
ActionListView: Time can take more space, so update the layout.

libraries/dateformatter/impl/build.gradle.kts

@@ -16,15 +16,29 @@ setupAnvil()
 android {
     namespace = "io.element.android.libraries.dateformatter.impl"
 
+    testOptions {
+        unitTests {
+            isIncludeAndroidResources = true
+        }
+    }
+
     dependencies {
         implementation(libs.dagger)
+        implementation(projects.libraries.core)
         implementation(projects.libraries.di)
+        implementation(projects.libraries.uiStrings)
+        implementation(projects.services.toolbox.api)
 
         api(projects.libraries.dateformatter.api)
         api(libs.datetime)
 
         testImplementation(libs.test.junit)
         testImplementation(libs.test.truth)
+        testImplementation(libs.test.turbine)
+        testImplementation(libs.test.robolectric)
         testImplementation(projects.libraries.dateformatter.test)
+        testImplementation(projects.services.toolbox.test)
+        testImplementation(projects.tests.testutils)
+        testImplementation(libs.androidx.compose.ui.test.junit)
     }
 }