Async client

[sre-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: junjiejiangjjj

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Needs approval from an approver in each of these files: - ~~[OWNERS](https://github.com/towhee-io/towhee/blob/main/OWNERS)~~ [junjiejiangjjj] Approvers can indicate their approval by writing `/approve` in a comment Approvers can cancel approval by writing `/approve cancel` in a comment

[codecov[bot]]

Codecov Report

Patch coverage: 74.46% and project coverage change: -0.01 :warning:

Comparison is base (b3fcbad) 75.80% compared to head (284cbe6) 75.79%.

:exclamation: Current head 284cbe6 differs from pull request most recent head a5e74d3. Consider uploading reports for the commit a5e74d3 to get more accurate results

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #2600 +/- ## ========================================== - Coverage 75.80% 75.79% -0.01% ========================================== Files 386 386 Lines 20492 20528 +36 Branches 2743 2752 +9 ========================================== + Hits 15534 15560 +26 - Misses 4070 4075 +5 - Partials 888 893 +5 ``` | [Impacted Files](https://app.codecov.io/gh/towhee-io/towhee/pull/2600?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=towhee-io) | Coverage Δ | | |---|---|---| | [towhee/serve/grpc/client.py](https://app.codecov.io/gh/towhee-io/towhee/pull/2600?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=towhee-io#diff-dG93aGVlL3NlcnZlL2dycGMvY2xpZW50LnB5) | `85.88% <67.56%> (-14.12%)` | :arrow_down: | | [towhee/serve/http/server.py](https://app.codecov.io/gh/towhee-io/towhee/pull/2600?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=towhee-io#diff-dG93aGVlL3NlcnZlL2h0dHAvc2VydmVyLnB5) | `97.29% <100.00%> (+5.40%)` | :arrow_up: | | [towhee/serve/triton/pipeline\_client.py](https://app.codecov.io/gh/towhee-io/towhee/pull/2600?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=towhee-io#diff-dG93aGVlL3NlcnZlL3RyaXRvbi9waXBlbGluZV9jbGllbnQucHk=) | `100.00% <100.00%> (ø)` | |

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[Chiiizzzy]

/lgtm