Add XCLocalSwiftPackageReference Support (#799)

- This implements parsing of new element type named `XCLocalSwiftPackageReference` which seems to be introduced with the release of Xcode 15.
  - This can be seen when adding a local package via the Package settings editor in the Xcode UI in Xcode 15
- `localPackages` are now exposed on `PBXProject`
- To add clarify `remotePackages` was also introduced which is intended to replace the now deprecated `packages` property

Test Plan:

- Use `XcodeProj` to read and write a project with the new local package element
- Verify `XcodeProj` is able to read the project without any issues 
- Verify the project written to disk is identical to the original one that was read

CHANGELOG.md

@@ -2,6 +2,12 @@
 
 ## Unreleased
 
+## 8.15.1
+
+### Added
+
+- Added XCLocalSwiftPackageReference Support (#799)[https://github.com/tuist/XcodeProj/pull/799] by [@art-divin](https://github.com/art-divin).
+
 ## 8.15.0
 
 ### Added

Fixtures/iOS/MyOtherLocalPackage/MyOtherLocalPackage/.gitignore

@@ -0,0 +1,4 @@
+.DS_Store
+/.build
+/Packages
+/*.xcodeproj

Fixtures/iOS/MyOtherLocalPackage/MyOtherLocalPackage/Package.swift

@@ -0,0 +1,31 @@
+// swift-tools-version:5.1
+// The swift-tools-version declares the minimum version of Swift required to build this package.
+
+import PackageDescription
+
+let package = Package(
+    name: "MyOtherLocalPackage",
+    products: [
+        // Products define the executables and libraries produced by a package, and make them visible to other packages.
+        .library(
+            name: "MyOtherLocalPackage",
+            targets: ["MyOtherLocalPackage"]
+        ),
+    ],
+    dependencies: [
+        // Dependencies declare other packages that this package depends on.
+        // .package(url: /* package url */, from: "1.0.0"),
+    ],
+    targets: [
+        // Targets are the basic building blocks of a package. A target can define a module or a test suite.
+        // Targets can depend on other targets in this package, and on products in packages which this package depends on.
+        .target(
+            name: "MyOtherLocalPackage",
+            dependencies: []
+        ),
+        .testTarget(
+            name: "MyOtherLocalPackageTests",
+            dependencies: ["MyOtherLocalPackage"]
+        ),
+    ]
+)

Fixtures/iOS/MyOtherLocalPackage/MyOtherLocalPackage/README.md

@@ -0,0 +1,3 @@
+# MyLocalPackage
+
+A description of this package.

Fixtures/iOS/MyOtherLocalPackage/MyOtherLocalPackage/Sources/MyOtherLocalPackage/MyOtherLocalPackage.swift

@@ -0,0 +1,3 @@
+struct MyOtherLocalPackage {
+    var text = "Hello, World!"
+}

Fixtures/iOS/MyOtherLocalPackage/MyOtherLocalPackage/Tests/LinuxMain.swift

@@ -0,0 +1,7 @@
+import XCTest
+
+import MyLocalPackageTests
+
+var tests = [XCTestCaseEntry]()
+tests += MyLocalPackageTests.allTests()
+XCTMain(tests)

Fixtures/iOS/MyOtherLocalPackage/MyOtherLocalPackage/Tests/MyOtherLocalPackageTests/MyLocalPackageTests.swift

@@ -0,0 +1,15 @@
+import XCTest
+@testable import MyOtherLocalPackage
+
+final class MyLocalPackageTests: XCTestCase {
+    func testExample() {
+        // This is an example of a functional test case.
+        // Use XCTAssert and related functions to verify your tests produce the correct
+        // results.
+        XCTAssertEqual(MyOtherLocalPackage().text, "Hello, World!")
+    }
+
+    static var allTests = [
+        ("testExample", testExample),
+    ]
+}

Fixtures/iOS/MyOtherLocalPackage/MyOtherLocalPackage/Tests/MyOtherLocalPackageTests/XCTestManifests.swift

@@ -0,0 +1,9 @@
+import XCTest
+
+#if !canImport(ObjectiveC)
+    public func allTests() -> [XCTestCaseEntry] {
+        [
+            testCase(MyLocalPackageTests.allTests),
+        ]
+    }
+#endif