feat(rust,python): Add quantiles method to expression list namespace

[Feiyang472]

We would like to add a .quantile method for the list namespace.
This is a natural extension from the median method.

Please let me know where best to add unittests/doctests

[codecov]

Codecov Report

Attention: Patch coverage is 71.27660% with 27 lines in your changes missing coverage. Please review.

Project coverage is 79.78%. Comparing base (87b03aa) to head (645956a).

Files with missing lines	Patch %	Lines
...es/polars-ops/src/chunked_array/list/dispersion.rs	72.50%	11 Missing ⚠️
.../polars-core/src/series/implementations/decimal.rs	0.00%	5 Missing ⚠️
...s-arrow/src/legacy/kernels/rolling/no_nulls/mod.rs	0.00%	4 Missing ⚠️
crates/polars-core/src/series/series_trait.rs	0.00%	3 Missing ⚠️
...polars-core/src/series/implementations/duration.rs	80.00%	1 Missing ⚠️
...s/polars-core/src/series/implementations/floats.rs	80.00%	1 Missing ⚠️
...ates/polars-core/src/series/implementations/mod.rs	80.00%	1 Missing ⚠️
crates/polars-plan/src/dsl/function_expr/list.rs	83.33%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #20782   +/-   ##
=======================================
  Coverage   79.78%   79.78%           
=======================================
  Files        1561     1561           
  Lines      222001   222095   +94     
  Branches     2531     2531           
=======================================
+ Hits       177117   177193   +76     
- Misses      44302    44320   +18     
  Partials      582      582           

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[Feiyang472]

the python3.9 test failure seems to have been resolved since #20776, I have merged with main head to rerun the CI pipes