Poll end (#1182)

- Adds an "End Poll" item in the action list long press menu.
  - Shows only on remote polls that have not ended yet and only if the user is the creator or has redact powers.

Closes https://github.com/vector-im/element-meta/issues/2026

libraries/designsystem/src/main/kotlin/io/element/android/libraries/designsystem/VectorIcons.kt

@@ -27,4 +27,5 @@ object VectorIcons {
     val ReportContent = R.drawable.ic_report_content
     val Groups = R.drawable.ic_groups
     val Share = R.drawable.ic_share
+    val EndPoll = R.drawable.ic_done_24
 }

libraries/designsystem/src/main/res/drawable/ic_done_24.xml

@@ -0,0 +1,10 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="960"
+    android:viewportHeight="960"
+    android:tint="?attr/colorControlNormal">
+  <path
+      android:fillColor="@android:color/white"
+      android:pathData="M382,720L154,492L211,435L382,606L749,239L806,296L382,720Z"/>
+</vector>