Add Open URL and Remote Control as sidebar items

After disabling home shortcuts on tvOS, Open URL and Remote Control had
no entry point. Add them as configurable sidebar main items. Remote
Control defaults to visible on tvOS; Open URL defaults to hidden on all
platforms.

Yattee/Localizable.xcstrings

@@ -14195,6 +14195,28 @@
         }
       }
     },
+    "sidebar.mainItem.openURL" : {
+      "comment" : "Sidebar main navigation item for opening a URL",
+      "localizations" : {
+        "en" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "Open URL"
+          }
+        }
+      }
+    },
+    "sidebar.mainItem.remoteControl" : {
+      "comment" : "Sidebar main navigation item for remote control",
+      "localizations" : {
+        "en" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "Remote Control"
+          }
+        }
+      }
+    },
     "sidebar.mainItem.search" : {
       "comment" : "Sidebar main navigation item for search",
       "localizations" : {