misc: add parametrizable colors for theme support

src/settingsview/components/BannedContacts.qml

src/settingsview/components/BannedItemDelegate.qml

src/settingsview/components/CurrentAccountSettings.qml

src/settingsview/components/DeviceItemDelegate.qml

src/settingsview/components/GeneralSettingsPage.qml

src/settingsview/components/JamiUserIdentity.qml

src/settingsview/components/KeyBoardShortcutKey.qml

src/settingsview/components/KeyBoardShortcutTable.qml

src/settingsview/components/LinkDeviceDialog.qml

src/settingsview/components/LinkedDevices.qml

src/settingsview/components/MediaCodecDelegate.qml

src/settingsview/components/MediaSettings.qml

src/settingsview/components/PluginItemDelegate.qml

src/settingsview/components/PluginListPreferencesView.qml

src/settingsview/components/PluginListSettingsView.qml

src/settingsview/components/PluginSettingsPage.qml

src/settingsview/components/RecordingSettings.qml

src/settingsview/components/SettingMaterialButton.qml

src/settingsview/components/SettingSpinBox.qml

src/settingsview/components/SettingsHeader.qml