[v0.0.11] Add support for `polars`

What's Changed

• Add polars dependency by @durandtibo in #138
• Add SeriesEqualityOperator by @durandtibo in #139
• Add DataFrameEqualityOperator by @durandtibo in #140
• Add SeriesAllCloseOperator by @durandtibo in #141
• Improve tests by @durandtibo in #142
• Add DataFrameAllCloseOperator for polars by @durandtibo in #143
• Add missing tests for DataFrameAllCloseOperator by @durandtibo in #144
• Add polars to CI workflow by @durandtibo in #145
• Add polars to nightly tests workflow by @durandtibo in #146
• Add polars to nightly package workflow by @durandtibo in #147
• Add nulls_compare_equal to SeriesEqualityOperator by @durandtibo in #148
• Add nulls_compare_equal to DataFrameEqualityOperator by @durandtibo in #149
• Add nulls_compare_equal to SeriesEqualityOperator by @durandtibo in #150
• Add nulls_compare_equal to DataFrameEqualityOperator by @durandtibo in #151
• Update polars>=0.18.3 by @durandtibo in #152
• Release version 0.0.11 by @durandtibo in #153

Full Changelog: v0.0.10...v0.0.11