feat(ts-sdk): add Together LLM provider (#6049)

Co-authored-by: zhangsixiao <zhangsixiao@bytedance.com>
Co-authored-by: kartik-mem0 <kartik.labhshetwar@mem0.ai>

mem0-ts/src/oss/tests/factory.unit.test.ts

@@ -117,6 +117,11 @@ jest.mock("../src/llms/minimax", () => ({
     .fn()
     .mockImplementation((config) => ({ type: "minimax-llm", config })),
 }));
+jest.mock("../src/llms/together", () => ({
+  TogetherLLM: jest
+    .fn()
+    .mockImplementation((config) => ({ type: "together-llm", config })),
+}));
 jest.mock("../src/llms/vllm", () => ({
   VllmLLM: jest
     .fn()
@@ -266,6 +271,7 @@ describe("LLMFactory", () => {
     ["xai"],
     ["litellm"],
     ["minimax"],
+    ["together"],
     ["vllm"],
   ])("creates LLM for provider '%s'", (provider) => {
     expect(() => LLMFactory.create(provider, dummyLLMConfig)).not.toThrow();
@@ -297,6 +303,7 @@ describe("VectorStoreFactory", () => {
       VectorStoreFactory.create("memory", {
         collectionName: "test",
         dimension: 4,
+        dbPath: ":memory:",
       }),
     ).not.toThrow();
   });