Add range search capability to indexes with AnnIterator support

[zhengbuqian]

tested using sparse index.

issue: https://github.com/zilliztech/knowhere/issues/193 /kind: feature

[sre-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: zhengbuqian

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[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 71.32%. Comparing base (3c46f4c) to head (948a79e). Report is 15 commits behind head on main.

Additional details and impacted files

[](https://app.codecov.io/gh/zilliztech/knowhere/pull/508?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=zilliztech) ```diff @@ Coverage Diff @@ ## main #508 +/- ## ========================================= + Coverage 0 71.32% +71.32% ========================================= Files 0 67 +67 Lines 0 4429 +4429 ========================================= + Hits 0 3159 +3159 - Misses 0 1270 +1270 ``` [see 67 files with indirect coverage changes](https://app.codecov.io/gh/zilliztech/knowhere/pull/508/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=zilliztech)

[zhengbuqian]

/hold It won't compile with swig for now

[zhengbuqian]

/hold It won't compile with swig for now

fixing in https://github.com/zilliztech/knowhere/pull/509, will unhold after that is merged.

[zhengbuqian]

/unhold

[alexanderguzhva]

/lgtm