Add test cases for fp16, bf16, hybrid search

[ThreadDao]

• Add test cases for f616 and bf16 vector type
• Add test cases for multi-vectors and hybrid search

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 71.83%. Comparing base (7d66951) to head (f21ccdd).

❗ Current head f21ccdd differs from pull request most recent head 2912551. Consider uploading reports for the commit 2912551 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #685      +/-   ##
==========================================
- Coverage   71.90%   71.83%   -0.07%     
==========================================
  Files          51       51              
  Lines        4751     4747       -4     
==========================================
- Hits         3416     3410       -6     
- Misses       1211     1214       +3     
+ Partials      124      123       -1     

Files	Coverage Δ
client/ann_request.go	0.00% <0.00%> (ø)

... and 3 files with indirect coverage changes

[congqixia]

/lgtm
/kind enhancement

[congqixia]

/approve

[sre-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: congqixia, ThreadDao

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