Adding spatial graph support

[JoOkuma]

No description provided.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 91.48936% with 4 lines in your changes missing coverage. Please review.

Project coverage is 88.18%. Comparing base (963aecd) to head (18482a9).
Report is 4 commits behind head on main.

Files with missing lines	Patch %	Lines
src/tracksdata/graph/_base_graph.py	33.33%	2 Missing ⚠️
src/tracksdata/graph/filters/_spatial_filter.py	95.45%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #112      +/-   ##
==========================================
+ Coverage   88.13%   88.18%   +0.05%     
==========================================
  Files          46       47       +1     
  Lines        2747     2794      +47     
  Branches      455      459       +4     
==========================================
+ Hits         2421     2464      +43     
- Misses        194      197       +3     
- Partials      132      133       +1     

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