feat: support macos "sudden termination"

More info: https://developer.apple.com/documentation/foundation/processinfo#1651129

alt-tab-macos/Info.plist

@@ -30,5 +30,7 @@
 	<string>1</string>
 	<key>ATSApplicationFontsPath</key>
 	<string></string>
+	<key>NSSupportsSuddenTermination</key>
+	<string>true</string>
 </dict>
 </plist>

alt-tab-macos/logic/Preferences.swift

@@ -130,7 +130,9 @@ class Preferences {
     }
 
     static func saveRawToDisk() throws {
+        ProcessInfo.processInfo.disableSuddenTermination()
         try saveToDisk(rawValues, userFile)
+        ProcessInfo.processInfo.enableSuddenTermination()
     }
 
     private static func preferencesVersion(_ url: URL) throws -> Int {

alt-tab-macos/ui/preferences-window/PreferencesWindow.swift

@@ -35,8 +35,8 @@ class PreferencesWindow: NSWindow {
                 throw NSError.make(domain: "Preferences", message: "Please enter a valid value for '" + key + "'")
             }
             try Preferences.updateAndValidateFromString(key, newValue)
-            (App.shared as! App).initPreferencesDependentComponents()
             try Preferences.saveRawToDisk()
+            (App.shared as! App).initPreferencesDependentComponents()
         } catch let error {
             debugPrint("PreferencesWindow: save: error", key, newValue, error)
             showSaveErrorSheetModal(error as NSError, senderControl, key, previousValue) // allows recursive call by user choice