feat(cocoapods): add cocoapods spec

Setup cocoapods spec for the package.

.swift-version

@@ -1 +1 @@
-5.6.1
+5.5

ImmutableXCore.podspec

@@ -0,0 +1,28 @@
+Pod::Spec.new do |spec|
+    spec.name                  = 'ImmutableXCore'
+    spec.version               = '0.1.0'
+    spec.summary               = 'The Immutable X Core SDK Swift for applications written on the Immutable X platform.'
+
+    spec.description           = <<-DESC
+    The Immutable Core SDK Swift provides convenient access to the Immutable API's for applications written on the Immutable X platform.
+                     DESC
+
+    spec.homepage              = 'https://github.com/immutable/imx-core-sdk-swift'
+    spec.documentation_url     = 'https://docs.x.immutable.com/sdk-docs/core-sdk-swift/overview'
+    spec.license               = { :type => 'Apache License 2.0', :file => 'LICENSE' }
+    spec.author                = { 'Immutable' => '[email protected]'}
+
+    spec.source                = { :git => 'https://github.com/immutable/imx-core-sdk-swift.git', :tag => "v#{spec.version}" }
+    spec.source_files          = 'Sources/**/*.swift'
+
+    spec.swift_version         = '5.5'
+
+    spec.ios.deployment_target = '13'
+    spec.osx.deployment_target = '10.15'
+
+    spec.dependency 'AnyCodable-FlightSchool', '~> 0.6'
+    spec.dependency 'BigInt', '~> 5.2.0'
+    spec.dependency 'secp256k1.swift', '~> 0.1'
+
+    spec.resources = ['Sources/ImmutableXCore/version']
+  end

Sources/ImmutableXCore/ImmutableXCore.swift

@@ -28,7 +28,11 @@ public struct ImmutableXCore {
 
     /// Returns the version of the sdk reading from the `version` file, e.g. `"1.0.0"`
     internal var sdkVersion: String {
-        let file = Bundle.module.path(forResource: "version", ofType: "")!
+        #if SWIFT_PACKAGE
+            let file = Bundle.module.path(forResource: "version", ofType: "")!
+        #else
+            let file = Bundle(for: BuyWorkflow.self).path(forResource: "version", ofType: "")!
+        #endif
         // swiftlint:disable:next force_try
         return try! String(contentsOfFile: file).trimmingCharacters(in: CharacterSet.whitespacesAndNewlines)
     }