add all api to sort by month

Sources/App/Libraries/SwiftDate/Foundation+Extras/Int+DateComponents.swift

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+//
+//  SwiftDate
+//  Parse, validate, manipulate, and display dates, time and timezones in Swift
+//
+//  Created by Daniele Margutti
+//   - Web: https://www.danielemargutti.com
+//   - Twitter: https://twitter.com/danielemargutti
+//   - Mail: hello@danielemargutti.com
+//
+//  Copyright © 2019 Daniele Margutti. Licensed under MIT License.
+//
+
+import Foundation
+
+// MARK: Int Extension
+
+/// This allows us to transform a literal number in a `DateComponents` and use it in math operations
+/// For example `5.days` will create a new `DateComponents` where `.day = 5`.
+
+public extension Int {
+
+	/// Internal transformation function
+	///
+	/// - parameter type: component to use
+	///
+	/// - returns: return self value in form of `DateComponents` where given `Calendar.Component` has `self` as value
+	internal func toDateComponents(type: Calendar.Component) -> DateComponents {
+		var dateComponents = DateComponents()
+		dateComponents.setValue(self, for: type)
+		return dateComponents
+	}
+
+	/// Create a `DateComponents` with `self` value set as nanoseconds
+	var nanoseconds: DateComponents {
+		return toDateComponents(type: .nanosecond)
+	}
+
+	/// Create a `DateComponents` with `self` value set as seconds
+	var seconds: DateComponents {
+		return toDateComponents(type: .second)
+	}
+
+	/// Create a `DateComponents` with `self` value set as minutes
+	var minutes: DateComponents {
+		return toDateComponents(type: .minute)
+	}
+
+	/// Create a `DateComponents` with `self` value set as hours
+	var hours: DateComponents {
+		return toDateComponents(type: .hour)
+	}
+
+	/// Create a `DateComponents` with `self` value set as days
+	var days: DateComponents {
+		return toDateComponents(type: .day)
+	}
+
+	/// Create a `DateComponents` with `self` value set as weeks
+	var weeks: DateComponents {
+		return toDateComponents(type: .weekOfYear)
+	}
+
+	/// Create a `DateComponents` with `self` value set as months
+	var months: DateComponents {
+		return toDateComponents(type: .month)
+	}
+
+	/// Create a `DateComponents` with `self` value set as years
+	var years: DateComponents {
+		return toDateComponents(type: .year)
+	}
+
+	/// Create a `DateComponents` with `self` value set as quarters
+	var quarters: DateComponents {
+		return toDateComponents(type: .quarter)
+	}
+
+}