add filter days to cusomize page

Shared/Models/DaysFilterClass.swift

@@ -0,0 +1,28 @@
+//
+//  DaysFilterClass.swift
+//  Feels
+//
+//  Created by Trey Tartt on 3/31/22.
+//
+
+import Foundation
+
+class DaysFilterClass: ObservableObject {
+    @Published public private(set) var currentFilters = [Int]()
+    
+    init() {
+        currentFilters = UserDefaultsStore.getDaysFilter()
+    }
+    
+    func addFilter(newFilter: Int) {
+        currentFilters.append(newFilter)
+        currentFilters = UserDefaultsStore.saveDaysFilter(days: currentFilters)
+    }
+    
+    func removeFilter(filter: Int) {
+        if let index = currentFilters.firstIndex(of: filter) {
+            currentFilters.remove(at: index)
+        }
+        currentFilters = UserDefaultsStore.saveDaysFilter(days: currentFilters)
+    }
+}