Update clang-format rules

[elshize]

Updates the clang-format rules and reformats all source files. A current version of clang-format is also used instead of 9.

Fixes #557

[codecov[bot]]

Codecov Report

Attention: 21 lines in your changes are missing coverage. Please review.

Comparison is base (9ec5817) 93.21% compared to head (bf6bb37) 93.21%.

Files	Patch %	Lines
include/pisa/payload_vector.hpp	88.37%	5 Missing :warning:
include/pisa/wand_data_compressed.hpp	81.25%	3 Missing :warning:
include/pisa/wand_data_range.hpp	70.00%	3 Missing :warning:
include/pisa/cursor/block_max_scored_cursor.hpp	60.00%	2 Missing :warning:
include/pisa/wand_data.hpp	77.77%	2 Missing :warning:
include/pisa/accumulator/lazy_accumulator.hpp	83.33%	1 Missing :warning:
include/pisa/block_freq_index.hpp	92.30%	1 Missing :warning:
include/pisa/codec/varintgb.hpp	83.33%	1 Missing :warning:
include/pisa/freq_index.hpp	90.90%	1 Missing :warning:
include/pisa/linear_quantizer.hpp	66.66%	1 Missing :warning:
... and 1 more

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #559 +/- ## ======================================= Coverage 93.21% 93.21% ======================================= Files 91 91 Lines 4508 4483 -25 ======================================= - Hits 4202 4179 -23 + Misses 306 304 -2 ```

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