feat(poll): add create poll option endpoint

- Add CreatePollOptionResponse class
- Add CreatePollOptionRequestData with CreatePollOptionRequest builder class
- Add createOption() static factory method
- Add POST /polls/{poll_id}/options service method
- Add unit test for poll option creation

Author: GwFreak01

src/main/java/io/getstream/chat/java/models/Poll.java

@@ -427,6 +427,58 @@ protected Call<StreamResponseObject> generateCall(Client client) throws StreamEx
     }
   }
 
+  /** Response for creating a poll option. */
+  @Data
+  @NoArgsConstructor
+  @EqualsAndHashCode(callSuper = true)
+  public static class CreatePollOptionResponse extends StreamResponseObject {
+    @NotNull
+    @JsonProperty("poll_option")
+    private PollOption pollOption;
+  }
+
+  /** Request data for creating a poll option. */
+  @Builder(
+      builderClassName = "CreatePollOptionRequest",
+      builderMethodName = "",
+      buildMethodName = "internalBuild")
+  @Getter
+  @EqualsAndHashCode
+  public static class CreatePollOptionRequestData {
+    @Nullable
+    @JsonProperty("id")
+    private String id;
+
+    @Nullable
+    @JsonProperty("text")
+    private String text;
+
+    @Nullable
+    @JsonProperty("position")
+    private Integer position;
+
+    @Nullable
+    @JsonProperty("user_id")
+    private String userId;
+
+    @Nullable
+    @JsonProperty("user")
+    private UserRequestObject user;
+
+    public static class CreatePollOptionRequest extends StreamRequest<CreatePollOptionResponse> {
+      @NotNull private String pollId;
+
+      private CreatePollOptionRequest(@NotNull String pollId) {
+        this.pollId = pollId;
+      }
+
+      @Override
+      protected Call<CreatePollOptionResponse> generateCall(Client client) throws StreamException {
+        return client.create(PollService.class).createOption(this.pollId, this.internalBuild());
+      }
+    }
+  }
+
   /** Request data for creating a poll. */
   @Builder(
       builderClassName = "CreatePollRequest",
@@ -543,4 +595,16 @@ public static PartialUpdatePollRequestData.PartialUpdatePollRequest partialUpdat
   public static DeletePollRequest delete(@NotNull String pollId) {
     return new DeletePollRequest(pollId);
   }
+
+  /**
+   * Creates a poll option.
+   *
+   * @param pollId the poll ID
+   * @return the created request
+   */
+  @NotNull
+  public static CreatePollOptionRequestData.CreatePollOptionRequest createOption(
+      @NotNull String pollId) {
+    return new CreatePollOptionRequestData.CreatePollOptionRequest(pollId);
+  }
 }

src/main/java/io/getstream/chat/java/services/PollService.java

@@ -1,5 +1,7 @@
 package io.getstream.chat.java.services;
 
+import io.getstream.chat.java.models.Poll.CreatePollOptionRequestData;
+import io.getstream.chat.java.models.Poll.CreatePollOptionResponse;
 import io.getstream.chat.java.models.Poll.CreatePollRequestData;
 import io.getstream.chat.java.models.Poll.CreatePollResponse;
 import io.getstream.chat.java.models.Poll.GetPollResponse;
@@ -72,4 +74,15 @@ Call<UpdatePollResponse> partialUpdate(
   @DELETE("polls/{poll_id}")
   Call<StreamResponseObject> delete(
       @NotNull @Path("poll_id") String pollId, @Nullable @Query("user_id") String userId);
+
+  /**
+   * Creates a poll option.
+   *
+   * @param pollId The poll ID
+   * @param request The poll option creation request data
+   * @return A response with the created poll option
+   */
+  @POST("polls/{poll_id}/options")
+  Call<CreatePollOptionResponse> createOption(
+      @NotNull @Path("poll_id") String pollId, @NotNull @Body CreatePollOptionRequestData request);
 }

src/test/java/io/getstream/chat/java/PollTest.java

@@ -1,6 +1,7 @@
 package io.getstream.chat.java;
 
 import io.getstream.chat.java.models.Poll;
+import io.getstream.chat.java.models.Poll.CreatePollOptionResponse;
 import io.getstream.chat.java.models.Poll.CreatePollResponse;
 import io.getstream.chat.java.models.Poll.GetPollResponse;
 import io.getstream.chat.java.models.Poll.PollOptionRequestObject;
@@ -285,4 +286,35 @@ void whenDeletingPoll_thenNoException() {
 
     Assertions.assertNotNull(deleteResponse);
   }
+
+  @DisplayName("Can create a poll option")
+  @Test
+  void whenCreatingPollOption_thenNoException() {
+    // Create a poll first (with allow_user_suggested_options enabled)
+    CreatePollResponse createResponse =
+        Assertions.assertDoesNotThrow(
+            () ->
+                Poll.create()
+                    .name("Poll for options " + UUID.randomUUID())
+                    .allowUserSuggestedOptions(true)
+                    .userId(testUserRequestObject.getId())
+                    .option(PollOptionRequestObject.builder().text("Initial Option").build())
+                    .request());
+
+    String pollId = createResponse.getPoll().getId();
+
+    // Create a new option
+    CreatePollOptionResponse optionResponse =
+        Assertions.assertDoesNotThrow(
+            () ->
+                Poll.createOption(pollId)
+                    .text("New Option " + UUID.randomUUID())
+                    .userId(testUserRequestObject.getId())
+                    .request());
+
+    Assertions.assertNotNull(optionResponse);
+    Assertions.assertNotNull(optionResponse.getPollOption());
+    Assertions.assertNotNull(optionResponse.getPollOption().getId());
+    Assertions.assertNotNull(optionResponse.getPollOption().getText());
+  }
 }