added pretty printing for config, indexer, searcher

[vovw]

makes it much easier to inspect the objects than the default printing which dumps all fields at once.

[vovw]

@codetalker7 review ?

[codecov]

Codecov Report

Attention: Patch coverage is 62.50000% with 15 lines in your changes missing coverage. Please review.

Project coverage is 57.23%. Comparing base (1480f52) to head (0aaacd6).

Files with missing lines	Patch %	Lines
src/indexing.jl	0.00%	8 Missing ⚠️
src/searching.jl	0.00%	7 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #39      +/-   ##
==========================================
+ Coverage   56.93%   57.23%   +0.30%     
==========================================
  Files          16       16              
  Lines         699      739      +40     
==========================================
+ Hits          398      423      +25     
- Misses        301      316      +15     

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[codetalker7]

A minor thing about tests: can you also add some simple tests which just call the show methods? Some inspiration can be taken from other packages too (for instance see Flux: https://github.com/FluxML/Flux.jl/blob/7a3eafd5a71473df9e98b0992f9e84d5d6d9f978/test/layers/show.jl#L2).

[vovw]

i struggled with the tests a bit, would you mind taking a look?