Rebrand files names Spectral -> NeoChat

imports/NeoChat/Setting/Palette.qml

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+pragma Singleton
+import QtQuick 2.12
+import QtQuick.Controls.Material 2.12
+
+QtObject {
+    readonly property int theme: MSettings.darkTheme ? Material.Dark : Material.Light
+
+    readonly property color primary: "#344955"
+    readonly property color accent: "#4286F5"
+    readonly property color foreground: MSettings.darkTheme ? "#FFFFFF" : "#1D333E"
+    readonly property color background: MSettings.darkTheme ? "#303030" : "#FFFFFF"
+    readonly property color lighter: MSettings.darkTheme ? "#FFFFFF" : "#5B7480"
+    readonly property color banner: MSettings.darkTheme ? "#404040" : "#F2F3F4"
+}

imports/NeoChat/Setting/Setting.qml

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+pragma Singleton
+import QtQuick 2.12
+import Qt.labs.settings 1.0
+
+Settings {
+    property bool showNotification: true
+
+    property bool showTray: true
+
+    property bool darkTheme
+
+    property string fontFamily: "Roboto,Noto Sans,Noto Color Emoji"
+}

imports/NeoChat/Setting/qmldir

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+module NeoChat.Setting
+singleton MSettings 0.1 Setting.qml
+singleton MPalette 0.1 Palette.qml