Resolve some clippys, format

[sigaloid]

Lots of f32->f64 comparisons need to be resolved as well, an error margin should be determined for comparison.

Passes tests

[fulmicoton]

Thank you!

[codecov]

Codecov Report

Merging #1144 (047afcc) into main (1a45b03) will increase coverage by 0.02%.
The diff coverage is 91.66%.

@@            Coverage Diff             @@
##             main    #1144      +/-   ##
==========================================
+ Coverage   89.49%   89.51%   +0.02%     
==========================================
  Files         203      203              
  Lines       20251    20243       -8     
==========================================
- Hits        18124    18121       -3     
+ Misses       2127     2122       -5     

Impacted Files	Coverage Δ
src/functional_test.rs	0.00% <0.00%> (ø)
src/core/index.rs	87.53% <100.00%> (ø)
src/fastfield/serializer/mod.rs	71.23% <100.00%> (-0.39%)	⬇️
src/indexer/merger.rs	89.65% <100.00%> (+0.08%)	⬆️
src/indexer/merger_sorted_index_test.rs	100.00% <100.00%> (ø)
src/postings/block_segment_postings.rs	94.56% <100.00%> (ø)
src/postings/serializer.rs	89.39% <100.00%> (-0.06%)	⬇️
src/query/automaton_weight.rs	91.02% <100.00%> (-0.23%)	⬇️
src/query/boolean_query/mod.rs	100.00% <100.00%> (ø)
src/schema/mod.rs	100.00% <100.00%> (ø)
... and 1 more

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