refactor: Migarate active subscription and description to code

Sources/Earthquake Network/Controllers/InApp/SubscriptionsDescriptionTableViewCell.swift

@@ -8,21 +8,40 @@
 
 import UIKit
 
-class SubscriptionsDescriptionTableViewCell: EQNBaseTableViewCell {
 
-    @IBOutlet private weak var headerLabel: UILabel!
-    @IBOutlet private weak var descriptionLabel: UILabel!
+class SubscriptionsDescriptionTableViewCell: EQNBaseContainerTableViewCell {
     
-    override func awakeFromNib() {
-        super.awakeFromNib()
+    override var headerText: String { NSLocalizedString("inapp_list", comment: "") }
+    
+    // MARK: - UI
+    
+    private lazy var descriptionLabel: UILabel = {
+        let label = UILabel()
+        label.translatesAutoresizingMaskIntoConstraints = false
+        label.textColor = AppTheme.shared.cardTextColor
+        label.font = .preferredFont(forTextStyle: .body)
+        label.textAlignment = .center
+        label.numberOfLines = 0
+        label.textAlignment = .justified
+        return label
+    }()
+    
+    // MARK: - Internal
+    
+    override func setupUI() {
+        super.setupUI()
         
-        localizeUI()
+        containerView.addSubview(descriptionLabel)
+        
+        descriptionLabel.topAnchor.constraint(equalTo: topView.bottomAnchor, constant: Self.DefaultVerticalSpacing).isActive = true
+        descriptionLabel.leadingAnchor.constraint(equalTo: containerView.leadingAnchor, constant: Self.DefaultPadding).isActive = true
+        descriptionLabel.trailingAnchor.constraint(equalTo: containerView.trailingAnchor, constant: -Self.DefaultPadding).isActive = true
+        descriptionLabel.bottomAnchor.constraint(equalTo: containerView.bottomAnchor, constant: -Self.DefaultVerticalSpacing).isActive = true
     }
-
-    // MARK: - Private
     
-    private func localizeUI() {
-        headerLabel.text = NSLocalizedString("inapp_list", comment: "")
+    override func updateUI() {
+        super.updateUI()
+        
         descriptionLabel.text = NSLocalizedString("inapp_description", comment: "")
     }
 }