Add tooltips to buttons and room invite button

src/qml/Chat/RoomHeader.qml

@@ -80,6 +80,10 @@ HRectangle {
                     height: parent.height
                     autoExclusive: true
                     checked: activeButton == modelData
+                    enabled: modelData == "members"
+                    toolTip.text: qsTr(
+                        modelData.charAt(0).toUpperCase() + modelData.slice(1)
+                    )
                     onClicked: activeButton =
                         activeButton == modelData ?  null : modelData
                 }

src/qml/Chat/RoomSidePane/MembersView.qml

@@ -40,15 +40,29 @@ HColumnLayout {
         }
     }
 
-    HTextField {
-        id: filterField
-        placeholderText: qsTr("Filter members")
-        backgroundColor: theme.sidePane.filterRooms.background
-        bordered: false
+    HRowLayout {
+        Layout.minimumHeight: theme.baseElementsHeight
+        Layout.maximumHeight: Layout.minimumHeight
 
-        onTextChanged: filterLimiter.requestFire()
+        HTextField {
+            id: filterField
+            placeholderText: qsTr("Filter members")
+            backgroundColor: theme.chat.roomSidePane.filterMembers.background
+            bordered: false
 
-        Layout.fillWidth: true
-        Layout.preferredHeight: theme.baseElementsHeight
+            onTextChanged: filterLimiter.requestFire()
+
+            Layout.fillWidth: true
+            Layout.fillHeight: true
+        }
+
+        HButton {
+            icon.name: "room-send-invite"
+            iconItem.dimension: parent.height
+            toolTip.text: qsTr("Invite to this room")
+            backgroundColor: theme.chat.roomSidePane.inviteButton.background
+
+            Layout.fillHeight: true
+        }
     }
 }