Apply standard Swift package configuration (#20)

Author: tinder-cfuller

Package.swift

@@ -45,8 +45,6 @@ package.targets.forEach { target in
         .regular,
         .test,
         .executable,
-        .plugin,
-        .macro,
     ]
 
     guard types.contains(target.type)
@@ -61,9 +59,6 @@ package.targets.forEach { target in
 //        ]
 //    }
 
-    guard target.type != .macro
-    else { return }
-
     if enableSwiftLintBuildToolPlugin {
         target.plugins = (target.plugins ?? []) + [
             .plugin(name: "SwiftLintBuildToolPlugin", package: "SwiftLint"),