[Swiftify] add Package.swift to enable LSP

lib/Macros/Package.swift

@@ -0,0 +1,46 @@
+// swift-tools-version: 6.2
+
+// Although this could in theory be used to build macros, it's not actually wired up to CMake.
+// This is here purely to provide LSP IDE features when working on Swift macros.
+
+import PackageDescription
+import CompilerPluginSupport
+
+let package = Package(
+	name: "SwiftifyImport",
+	platforms: [.macOS(.v11)],
+	products: [
+		.library(
+			name: "SwiftifyImport",
+			targets: [
+				"SwiftifyImport"
+			]
+		),
+		.library(
+			name: "SwiftifyImportMacro",
+			targets: [
+				"SwiftifyImportMacro"
+			]
+		)
+	],
+	dependencies: [
+		.package(path: "../../../swift-syntax")
+	],
+	targets: [
+		.macro(
+			name: "SwiftifyImportMacro",
+			dependencies: [
+				.product(name: "SwiftCompilerPlugin", package: "swift-syntax"),
+                .product(name: "SwiftDiagnostics", package: "swift-syntax"),
+                .product(name: "SwiftParser", package: "swift-syntax"),
+                .product(name: "SwiftSyntax", package: "swift-syntax"),
+                .product(name: "SwiftSyntaxBuilder", package: "swift-syntax"),
+                .product(name: "SwiftSyntaxMacro", package: "swift-syntax")
+			]
+		),
+		.target(
+			name: "SwiftifyImport",
+			dependencies: ["SwiftifyImportMacro"]
+		)
+	]
+)