feat(channels): add manage channels TV surface

feature/channels/src/main/kotlin/app/muxtv/feature/channels/ManageChannelsPresentation.kt

@@ -0,0 +1,34 @@
+package app.muxtv.feature.channels
+
+import app.muxtv.catalog.ChannelManagementItem
+
+internal data class ManageChannelRowUiModel(
+    val channelId: String,
+    val displayName: String,
+    val originalDisplayName: String?,
+    val channelNumber: String?,
+    val defaultChannelNumber: String?,
+    val customChannelNumber: Int?,
+    val hasCustomName: Boolean,
+    val hasCustomNumber: Boolean,
+    val isFavorite: Boolean,
+    val isHidden: Boolean,
+    val variantCount: Int,
+)
+
+internal fun buildManageChannelRow(item: ChannelManagementItem): ManageChannelRowUiModel {
+    val hasCustomName = item.effectiveDisplayName != item.canonicalDisplayName
+    return ManageChannelRowUiModel(
+        channelId = item.channelId,
+        displayName = item.effectiveDisplayName,
+        originalDisplayName = item.canonicalDisplayName.takeIf { hasCustomName },
+        channelNumber = item.effectiveChannelNumber,
+        defaultChannelNumber = item.defaultChannelNumber,
+        customChannelNumber = item.customChannelNumber,
+        hasCustomName = hasCustomName,
+        hasCustomNumber = item.customChannelNumber != null,
+        isFavorite = item.isFavorite,
+        isHidden = item.isHidden,
+        variantCount = item.variantCount,
+    )
+}