Add builders to request objects

This is so much nicer

README.md

@@ -2,8 +2,8 @@
 Java libraries for using OpenAI's GPT-3 api.
 
 Includes the following artifacts:
-- api : request/response POJOs for the GPT-3 engine, completion, and search APIs.
-- client : a basic retrofit client for the GPT-3 endpoints
+- `api` : request/response POJOs for the GPT-3 engine, completion, and search APIs.
+- `client` : a basic retrofit client for the GPT-3 endpoints
 
 as well as an example project using the client.
 
@@ -12,9 +12,10 @@ as well as an example project using the client.
 If you're looking for the fastest solution, import the `client` and use [OpenAiService](client/src/main/java/openai/OpenAiService.java).
 ```
 OpenAiService service = new OpenAiService(your_token)
-CompletionRequest completionRequest = new CompletionRequest();
-completionRequest.setPrompt("Somebody once told me the world is gonna roll me");
-completionRequest.setEcho(true);
+CompletionRequest completionRequest = CompletionRequest.builder()
+        .prompt("Somebody once told me the world is gonna roll me")
+        .echo(true)
+        .build();
 service.createCompletion("ada", completionRequest).getChoices().forEach(System.out::println);
 ```
 

api/src/main/java/openai/completion/CompletionRequest.java

@@ -1,6 +1,9 @@
 package openai.completion;
 
+import lombok.AllArgsConstructor;
+import lombok.Builder;
 import lombok.Data;
+import lombok.NoArgsConstructor;
 
 import java.util.List;
 
@@ -11,8 +14,12 @@ import java.util.List;
  * Documentation taken from
  * https://beta.openai.com/docs/api-reference/create-completion
  */
+@Builder
+@NoArgsConstructor
+@AllArgsConstructor
 @Data
 public class CompletionRequest {
+
     /**
      * An optional prompt to complete from
      */

api/src/main/java/openai/search/SearchRequest.java

@@ -1,6 +1,9 @@
 package openai.search;
 
+import lombok.AllArgsConstructor;
+import lombok.Builder;
 import lombok.Data;
+import lombok.NoArgsConstructor;
 
 import java.util.List;
 
@@ -11,8 +14,12 @@ import java.util.List;
  *
  * https://beta.openai.com/docs/api-reference/search
  */
+@Builder
+@NoArgsConstructor
+@AllArgsConstructor
 @Data
 public class SearchRequest {
+
     /**
      * Documents to search over
      */

example/src/main/java/example/OpenAiApiExample.java

@@ -20,15 +20,18 @@ class OpenAiApiExample {
         System.out.println(ada);
 
         System.out.println("\nCreating completion...");
-        CompletionRequest completionRequest = new CompletionRequest();
-        completionRequest.setPrompt("Somebody once told me the world is gonna roll me");
-        completionRequest.setEcho(true);
+
+        CompletionRequest completionRequest = CompletionRequest.builder()
+                .prompt("Somebody once told me the world is gonna roll me")
+                .echo(true)
+                .build();
         service.createCompletion("ada", completionRequest).getChoices().forEach(System.out::println);
 
         System.out.println("\nSearching documents...");
-        SearchRequest searchRequest = new SearchRequest();
-        searchRequest.setDocuments(Arrays.asList("Water", "Earth", "Electricity", "Fire"));
-        searchRequest.setQuery("Pikachu");
+        SearchRequest searchRequest = SearchRequest.builder()
+                .documents(Arrays.asList("Water", "Earth", "Electricity", "Fire"))
+                .query("Pikachu")
+                .build();
         service.search("ada", searchRequest).forEach(System.out::println);
     }
 }