[data] feat: TransferQueue - Add zero-copy serialization support & usage improvement (verl-project#4429)

### What does this PR do?

1. Support zero-copy serialization for SimpleUnit backend through
environment variable `TQ_ZERO_COPY_SERIALIZATION`.
TransferQueue/TransferQueue#121
2. When calling `tq_client.async_put()`, TQ will return the updated
`BatchMeta` object to the user. This will improve user experience when
using TQ. TransferQueue/TransferQueue#119
3. Add log for transferqueue_utils.py
4. Add new BatchMeta operations to simplify single-controller usage


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---------

Signed-off-by: 0oshowero0 <o0shower0o@outlook.com>

Author: 0oshowero0

.github/workflows/e2e_transferqueue.yml

@@ -124,13 +124,14 @@ jobs:
         run: |
           pip3 install --no-deps -e .[test,gpu]
           pip3 install transformers==$TRANSFORMERS_VERSION
-          pip3 install -i https://mirrors.tuna.tsinghua.edu.cn/pypi/web/simple TransferQueue==0.1.2.dev0
+          pip3 install -i https://mirrors.tuna.tsinghua.edu.cn/pypi/web/simple TransferQueue==0.1.4.dev1
       - name: Prepare GSM8K dataset
         run: |
           python3 examples/data_preprocess/gsm8k.py --local_dataset_path ${HOME}/models/hf_data/gsm8k
-      - name: Running the E2E test with TransferQueue (FSDP)
+      - name: Running the E2E test with TransferQueue (FSDP), enable zero copy serialization
         run: |
           ray stop --force
+          export TQ_ZERO_COPY_SERIALIZATION=True
           bash tests/special_e2e/run_transferqueue.sh
 
   # Test Megatron strategy
@@ -153,13 +154,14 @@ jobs:
         run: |
           pip3 install --no-deps -e .[test,gpu]
           pip3 install transformers==$TRANSFORMERS_VERSION
-          pip3 install -i https://mirrors.tuna.tsinghua.edu.cn/pypi/web/simple TransferQueue==0.1.2.dev0
+          pip3 install -i https://mirrors.tuna.tsinghua.edu.cn/pypi/web/simple TransferQueue==0.1.4.dev1
       - name: Prepare GSM8K dataset
         run: |
           python3 examples/data_preprocess/gsm8k.py --local_dataset_path ${HOME}/models/hf_data/gsm8k
-      - name: Running the E2E test with TransferQueue (Megatron)
+      - name: Running the E2E test with TransferQueue (Megatron), disable zero copy serialization
         run: |
           ray stop --force
+          export TQ_ZERO_COPY_SERIALIZATION=False
           bash tests/special_e2e/run_transferqueue.sh
 
   cleanup: