How can you implement a custom component in Hilt for dependency injection?

To create your own component in Hilt, you need to:

1. Define an interface for the component, annotated with @DefineComponent. It specifies dependencies available within the component.
2. Create an annotation to bind the component to a lifecycle, using @DefineComponent.Builder and @Component.Builder.
3. Link the created component with an existing Hilt component using @DefineComponent(parent = ...), specifying the parent component.
4. Create an annotation for dependency injection into this component using @EntryPoint or @InstallIn(YourCustomComponent.class).

Example:

@DefineComponent(parent = SingletonComponent::class)
interface CustomComponent

@DefineComponent.Builder
interface CustomComponentBuilder {
    fun build(): CustomComponent
}

@InstallIn(CustomComponent::class)
@Module
class CustomModule {
    @Provides
    fun provideSomething(): Something = Something()
}

This way, you can create custom components with the desired scope and manage dependencies more flexibly.