Move the "Explore rooms" button from the hamburger to the space drawer

I think we should put this feature in a more obvious place (and similar to other
chat applications.) Instead of it being buried underneath a menu, joining
spaces/rooms should have the space promenience as creating them - you're going
to be more likely to access this dialog more anyway.

src/qml/ExploreComponent.qml

@@ -78,21 +78,6 @@ RowLayout {
     Component {
         id: menu
         QQC2.Menu {
-            QQC2.MenuItem {
-                text: i18n("Explore rooms")
-                icon.name: "compass"
-                onTriggered: {
-                    let dialog = pageStack.pushDialogLayer(Qt.createComponent('org.kde.neochat', 'ExploreRoomsPage'), {
-                        connection: root.connection
-                    }, {
-                        title: i18nc("@title", "Explore Rooms")
-                    });
-                    dialog.roomSelected.connect((roomId, displayName, avatarUrl, alias, topic, memberCount, isJoined) => {
-                        RoomManager.resolveResource(roomId.length > 0 ? roomId : alias, isJoined ? "" : "join");
-                    });
-                }
-            }
-
             QQC2.MenuItem {
                 text: i18n("Find your friends")
                 icon.name: "list-add-user"

src/qml/SpaceDrawer.qml

@@ -275,6 +275,31 @@ QQC2.Control {
                         title: i18nc("@title", "Create a Space")
                     })
                 }
+
+                AvatarTabButton {
+                    Layout.fillWidth: true
+                    Layout.preferredHeight: width - Kirigami.Units.smallSpacing
+                    Layout.maximumHeight: width - Kirigami.Units.smallSpacing
+
+                    text: i18nc("@action:button", "Explore rooms")
+                    contentItem: Kirigami.Icon {
+                        source: "compass"
+                    }
+
+                    activeFocusOnTab: true
+
+                    onSelected: {
+                        let dialog = pageStack.pushDialogLayer(Qt.createComponent('org.kde.neochat', 'ExploreRoomsPage'), {
+                            connection: root.connection,
+                            keyword: RoomManager.sortFilterRoomTreeModel.filterText
+                        }, {
+                            title: i18nc("@title", "Explore Rooms")
+                        });
+                        dialog.roomSelected.connect((roomId, displayName, avatarUrl, alias, topic, memberCount, isJoined) => {
+                            RoomManager.resolveResource(roomId.length > 0 ? roomId : alias, isJoined ? "" : "join");
+                        });
+                    }
+                }
             }
         }
     }