Adding SPM compatibility

.gitmodules

@@ -1,3 +1 @@
-[submodule "External/Nimble"]
-	path = External/Nimble
-	url = git://github.com/Quick/Nimble.git
+

Package.swift

@@ -0,0 +1,28 @@
+// swift-tools-version:5.8
+// The swift-tools-version declares the minimum version of Swift required to build this package.
+
+import PackageDescription
+
+let package = Package(
+    name: "TableViewKit",
+    platforms: [.iOS(.v15)],
+    products: [
+        .library(
+            name: "TableViewKit", targets: ["TableViewKit"]),
+    ],
+    dependencies: [
+        .package(
+              url: "https://github.com/Quick/Nimble.git", .upToNextMajor(from: "13.2.0")
+        ),
+    ],
+    targets: [
+        .target(
+            name: "TableViewKit",
+            dependencies: [],
+            path: "./TableViewKit"),
+        .testTarget(
+            name: "TableViewKitTests",
+            dependencies: ["TableViewKit", "Nimble"],
+            path: "./TableViewKitTests")
+    ]
+)

TableViewKit/ActionPerformable.swift

@@ -1,5 +1,5 @@
 import Foundation
-
+import UIKit
 /// A type that represent the kind of action an item should perform.
 /// I.e.: copy or paste
 public enum ItemAction {

TableViewKit/Height.swift

@@ -1,4 +1,5 @@
 import Foundation
+import UIKit
 
 /// Defines either a dynamic or static height
 public enum Height {

TableViewKit/NibClassType.swift

@@ -1,4 +1,5 @@
 import Foundation
+import UIKit
 
 /// A Nib/Class loadable type
 public enum NibClassType<T> {

TableViewKit/Protocols/Editable.swift

@@ -1,4 +1,5 @@
 import Foundation
+import UIKit
 
 /// A type that represent an item that can be edited
 public protocol Editable: TableItem {

TableViewKit/Protocols/Selectable.swift

@@ -1,4 +1,5 @@
 import Foundation
+import UIKit
 
 /// A type that represent an item that can be selected
 public protocol Selectable: TableItem {

TableViewKit/Protocols/TableItem.swift

@@ -1,4 +1,5 @@
 import Foundation
+import UIKit
 
 @available(*, deprecated, renamed: "TableItem")
 public typealias Item = TableItem