Add Hfresh index type

[robbespo00]

It allows to create HFresh index. Currently users can set the following parameters:

• max_posting_size_kb: is the max allowed size for a posting list. By default is computed dynamically.
• replicas: is the number of posting lists in which a vector will be added. By default is 4
• search_probe: is the number of posting lists to search. By default is 64
• distance_metric: is the distance metric used to compute distances. By default is cosine
  If a parameter is not set then the default one will be used.

[orca-security-eu]

Orca Security Scan Summary

Status	Check	Issues by priority
Passed	Infrastructure as Code	0   0   0   0	View in Orca
Passed	SAST	0   0   0   0	View in Orca
Passed	Secrets	0   0   0   0	View in Orca
Passed	Vulnerabilities	0   0   0   0	View in Orca

[codecov-commenter]

Codecov Report

❌ Patch coverage is 93.33333% with 7 lines in your changes missing coverage. Please review.
✅ Project coverage is 87.81%. Comparing base (1ea40f4) to head (461b963).

Files with missing lines	Patch %	Lines
integration/test_collection_hfresh.py	93.54%	4 Missing ⚠️
weaviate/collections/classes/config.py	94.44%	1 Missing ⚠️
...eaviate/collections/classes/config_vector_index.py	94.11%	1 Missing ⚠️
weaviate/collections/classes/config_vectors.py	66.66%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##           dev/1.36    #1848      +/-   ##
============================================
+ Coverage     87.76%   87.81%   +0.04%     
============================================
  Files           279      280       +1     
  Lines         21158    21263     +105     
============================================
+ Hits          18570    18672     +102     
- Misses         2588     2591       +3     

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[orca-security-eu]

Orca Security Scan Summary

Status	Check	Issues by priority
Passed	Secrets	0   0   0   0	View in Orca