v0.18.3 Release

• Added optional generic support for the RecordService (#251).
  This should allow specifying a single TypeScript definition for the client, eg. using type assertion:

  interface Task {
    id:   string;
    name: string;
  }
  
  interface Post {
    id:     string;
    title:  string;
    active: boolean;
  }
  
  interface TypedPocketBase extends PocketBase {
    collection(idOrName: string): RecordService // default fallback for any other collection
    collection(idOrName: 'tasks'): RecordService<Task>
    collection(idOrName: 'posts'): RecordService<Post>
  }
  
  ...
  
  const pb = new PocketBase('http://127.0.0.1:8090') as TypedPocketBase
  
  // the same as pb.collection('tasks').getOne<Task>("RECORD_ID")
  await pb.collection('tasks').getOne("RECORD_ID") // -> results in Task
  
  // the same as pb.collection('posts').getOne<Post>("RECORD_ID")
  await pb.collection('posts').getOne("RECORD_ID") // -> results in Post