Test: Merge IntegrationTests into Tests

Consolidate all the tests into a single folders.  This change only moves
the IntegrationTests/Sources and IntegrationTests/Tests to their
respective directory.  In addition, update the IntegratioNTests to call
the respective `executeSwift*()` function and remove its dependency, as
much as possible, on Swift Tools Support Core in favor our the `Basics`
module.

A subsequent change will find better homes for the tests under
Tests/IntegrationTests.

Author: bkhouri

IntegrationTests/Fixtures/BinaryTargets/Inputs/DynamicLibrary/DynamicLibrary.m renamed to Fixtures/BinaryTargets/Inputs/DynamicLibrary/DynamicLibrary.m

@@ -0,0 +1,10 @@
+// swift-tools-version:5.3
+import PackageDescription
+
+let package = Package(
+    name: "AwesomeResources",
+    targets: [
+        .target(name: "AwesomeResources", resources: [.copy("hello.txt")]),
+        .testTarget(name: "AwesomeResourcesTest", dependencies: ["AwesomeResources"], resources: [.copy("world.txt")])
+    ]
+)

IntegrationTests/Fixtures/BinaryTargets/Inputs/DynamicLibrary/include/DynamicLibrary.h renamed to Fixtures/BinaryTargets/Inputs/DynamicLibrary/include/DynamicLibrary.h

@@ -0,0 +1,6 @@
+import Foundation
+
+public struct AwesomeResource {
+    public init() {}
+    public let hello = try! String(contentsOf: Bundle.module.url(forResource: "hello", withExtension: "txt")!)
+}

IntegrationTests/Fixtures/BinaryTargets/Inputs/StaticLibrary/StaticLibrary.m renamed to Fixtures/BinaryTargets/Inputs/StaticLibrary/StaticLibrary.m

@@ -0,0 +1 @@
+hello

IntegrationTests/Fixtures/BinaryTargets/Inputs/StaticLibrary/include/StaticLibrary.h renamed to Fixtures/BinaryTargets/Inputs/StaticLibrary/include/StaticLibrary.h

@@ -0,0 +1,13 @@
+import XCTest
+import Foundation
+import AwesomeResources
+
+final class MyTests: XCTestCase {
+    func testFoo() {
+        XCTAssertTrue(AwesomeResource().hello == "hello")
+    }
+    func testBar() {
+        let world = try! String(contentsOf: Bundle.module.url(forResource: "world", withExtension: "txt")!)
+        XCTAssertTrue(world == "world")
+    }
+}

IntegrationTests/Fixtures/BinaryTargets/Inputs/SwiftFramework/SwiftFramework.xcodeproj/project.pbxproj renamed to Fixtures/BinaryTargets/Inputs/SwiftFramework/SwiftFramework.xcodeproj/project.pbxproj

@@ -0,0 +1 @@
+world