Improve images resizing quality accross the board

- Using mipmap: true and smooth: true for images that are downscaled
(avatar, icons, ...)
- Using mipmap: false and smooth: true for images that are potentially
upscaled (background, overview, ...)

Bar/Modules/Applauncher.qml

@@ -347,6 +347,7 @@ PanelWithOverlay {
                                         anchors.fill: parent
                                         fillMode: Image.PreserveAspectFit
                                         smooth: true
+                                        mipmap: true
                                         cache: false
                                         asynchronous: true
                                         source: modelData.isCalculator ? "qrc:/icons/calculate.svg" : Quickshell.iconPath(modelData.icon, "application-x-executable")

Bar/Modules/CustomTrayMenu.qml

@@ -115,6 +115,8 @@ PopupWindow {
                     Image {
                         Layout.preferredWidth: 16
                         Layout.preferredHeight: 16
+                        smooth: true
+                        mipmap: true
                         source: modelData?.icon ?? ""
                         visible: (modelData?.icon ?? "") !== ""
                         fillMode: Image.PreserveAspectFit

Bar/Modules/Media.qml

@@ -54,6 +54,7 @@ Item {
                     anchors.margins: 1
                     fillMode: Image.PreserveAspectCrop
                     smooth: true
+                    mipmap: true
                     cache: false
                     asynchronous: true
                     sourceSize.width: 24

Bar/Modules/Taskbar.qml

@@ -75,6 +75,7 @@ Item {
                     anchors.centerIn: parent
                     source: getAppIcon(modelData)
                     smooth: true
+                    mipmap: true
                     visible: source.toString() !== ""
                 }