feat: add default SRID support

[stepankuzmin]

Closes #306

[codecov]

Codecov Report

Merging #308 (87c0969) into main (82bd113) will increase coverage by 0.24%.
The diff coverage is 51.85%.

@@            Coverage Diff             @@
##             main     #308      +/-   ##
==========================================
+ Coverage   55.55%   55.80%   +0.24%     
==========================================
  Files          14       14              
  Lines        1836     1844       +8     
==========================================
+ Hits         1020     1029       +9     
+ Misses        816      815       -1     

Impacted Files	Coverage Δ
src/bin/main.rs	0.72% <0.00%> (-0.05%)	⬇️
src/config.rs	54.63% <0.00%> (+0.55%)	⬆️
src/dev.rs	100.00% <ø> (ø)
src/server.rs	46.71% <75.00%> (+1.00%)	⬆️
src/db_actor.rs	93.75% <100.00%> (ø)
src/table_source.rs	94.44% <100.00%> (+1.88%)	⬆️

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