Remove firstName and lastName from contact interface,

move some implementations from AndroidContact to Contact interface

core/base/src/main/java/de/mm20/launcher2/search/Contact.kt

@@ -1,17 +1,43 @@
 package de.mm20.launcher2.search
 
+import android.content.Context
 import android.net.Uri
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.rounded.Person
+import de.mm20.launcher2.icons.ColorLayer
+import de.mm20.launcher2.icons.StaticLauncherIcon
+import de.mm20.launcher2.icons.TextLayer
+import de.mm20.launcher2.icons.VectorLayer
 
 interface Contact : SavableSearchable {
-    val firstName: String
-    val lastName: String
-    val displayName: String
-    val summary: String
+    val name: String
     val phoneNumbers: List<PhoneNumber>
     val emailAddresses: List<EmailAddress>
     val postalAddresses: List<PostalAddress>
     val contactApps: List<ContactApp>
 
+    val summary: String
+        get() {
+            return (phoneNumbers.map { it.number } + emailAddresses.map { it.address })
+                .joinToString(", ")
+        }
+
+    override fun getPlaceholderIcon(context: Context): StaticLauncherIcon {
+        val letter = (labelOverride ?: label).firstOrNull()?.toString()
+
+        if (letter != null) {
+            return StaticLauncherIcon(
+                foregroundLayer = TextLayer(text = letter, color = 0xFF2364AA.toInt()),
+                backgroundLayer = ColorLayer(0xFF2364AA.toInt())
+            )
+        }
+
+        return StaticLauncherIcon(
+            foregroundLayer = VectorLayer(Icons.Rounded.Person),
+            backgroundLayer = ColorLayer(0xFF2364AA.toInt())
+        )
+    }
+
     override val preferDetailsOverLaunch: Boolean
         get() = true
 }