manifest: Replace Calendar with Etar

Change-Id: If8a5786ee40cc8a20931eddfee51ed028155315a
diff --git a/snippets/lineage.xml b/snippets/lineage.xml
index 405e2e5..96d6f40 100644
--- a/snippets/lineage.xml
+++ b/snippets/lineage.xml
@@ -29,6 +29,7 @@
   <project path="packages/apps/AudioFX" name="LineageOS/android_packages_apps_AudioFX" />
   <project path="packages/apps/Backgrounds" name="LineageOS/android_packages_apps_Backgrounds" />
   <project path="packages/apps/Eleven" name="LineageOS/android_packages_apps_Eleven" />
+  <project path="packages/apps/Etar" name="LineageOS/android_packages_apps_Etar" />
   <project path="packages/apps/ExactCalculator" name="LineageOS/android_packages_apps_ExactCalculator" />
   <project path="packages/apps/Exchange" name="LineageOS/android_packages_apps_Exchange" />
   <project path="packages/apps/FMRadio" name="LineageOS/android_packages_apps_FMRadio" />