feat: Add Boost API

[trengrj]

Adds Boost features weaviate/weaviate#11103 to python client.

Near Vector/Object/XYZ operators now support a boost parameter.

Boost.property - for property boosts
Boost.filter - for filter boosts
Boost.numeric_decay for numeric decay boosts
Boost.time_decay for time decay boosts
Boost.blend for combining multiple boosts together.

All allow for an optional depth and weight parameter to control boosting impact. Time decay has a _decay_value_to_str helper for supporting python time values.

Property modifiers and Decay curves have constants.

Integration test added with 1.38 gate.

[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 67.28395% with 53 lines in your changes missing coverage. Please review.
⚠️ Please upload report for BASE (dev/1.38@c307d97). Learn more about missing BASE report.

Files with missing lines	Patch %	Lines
integration/test_collection_boost.py	63.63%	20 Missing ⚠️
weaviate/collections/grpc/query.py	29.16%	17 Missing ⚠️
weaviate/collections/classes/grpc.py	80.72%	16 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##             dev/1.38    #2030   +/-   ##
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  Coverage            ?   86.53%           
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  Files               ?      300           
  Lines               ?    23051           
  Branches            ?        0           
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  Hits                ?    19948           
  Misses              ?     3103           
  Partials            ?        0           

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[bevzzz]

Suggested change

	def property( # noqa: A003
	def numeric_property( # noqa: A003

suggestion: if numeric_decay has the "numeric_" prefix to highlight that it's only applicable to numeric properties, then I'd argue this method should have it as well

[trengrj]

We won't make a timestamp_property operator as Timestamps need a sensible scale. I'm open to changing it to numeric_property but it feels a bit more confusing to users.

[bevzzz]

numeric_property but it feels a bit more confusing to users

My speculation is that property suggest any property (bool, text, blob) can be used, whereas numeric_property sort of constraints that ==> less confusing.

Ofc that is unless we are planning to extend Boost in a way that, say, a text property can be boosted too, and that'll use Boost.property.

[orca-security-eu]

Orca Security Scan Summary

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