Annotate types, generated code with @MainActor

Generator/Sources/NeedleFramework/Generating/Serializers/DependencyProviderClassSerializer.swift

@@ -49,6 +49,7 @@ final class DependencyProviderClassSerializer: Serializer {
         }
 
         return """
+        @MainActor
         private class \(classNameSerializer.serialize()): \(provider.unprocessed.dependency.name) {
         \(propertiesSerializer.serialize())
         \(sourceComponentsSerializer.serialize())

Generator/Sources/NeedleFramework/Generating/Serializers/OutputSerializer.swift

@@ -132,6 +132,7 @@ class OutputSerializer: Serializer {
 
         \(registrationHelpers)
 
+        @MainActor
         public func registerProviderFactories() {
             \(registrationBody)
         }

Generator/Sources/NeedleFramework/Generating/Serializers/Pluginized/PluginExtensionContentSerializer.swift

@@ -41,6 +41,7 @@ class PluginExtensionContentSerializer: Serializer {
         let nonCoreComponentPropertyName = component.nonCoreComponent.name.lowercasedFirstChar()
 
         return """
+        @MainActor
         /// \(component.data.name) plugin extension
         private class \(extensionClassName): \(component.pluginExtension.name) {
         \(properties)

Sources/NeedleFoundation/Component.swift

@@ -17,11 +17,13 @@
 import Foundation
 
 /// The base protocol of a dependency, enabling Needle's parsing process.
+@MainActor
 public protocol Dependency: AnyObject {}
 
 /// The base protocol of a DI scope. Application code should inherit
 /// from the `Component` base class, instead of using this protocol
 /// directly.
+@MainActor
 public protocol Scope: AnyObject {
     /// The path to reach this component on the dependnecy graph.
     var path: [String] { get }
@@ -35,6 +37,7 @@ public protocol Scope: AnyObject {
 /// contains a set of properties it provides to units of its scope as well
 /// as child scopes. A component instantiates child components that define
 /// child scopes.
+@MainActor
 @dynamicMemberLookup
 open class Component<DependencyType>: Scope {
 

Sources/NeedleFoundation/Internal/DependencyProviderRegistry.swift

@@ -26,6 +26,7 @@ import Foundation
 // method in the base component class. Generate extensions to all the
 // component subclasses that override the method to instantiate the
 // dependnecy providers.
+@MainActor
 public class __DependencyProviderRegistry {
 
     /// The singleton instance.

Sources/NeedleFoundation/Pluginized/Internal/PluginExtensionProviderRegistry.swift

@@ -25,6 +25,7 @@ import Foundation
 // method in the base pluginized component class. Generate extensions to
 // all the pluginized component subclasses that override the method to
 // instantiate the dependnecy providers.
+@MainActor
 public class __PluginExtensionProviderRegistry {
 
     /// The singleton instance.