removed dummy code for grazing angle calculation

added handling for shadowing

added seek local maxima feature

added multithreading for shadowing calculations

added handling for out-of-bounds chunks.

fixed threading issue.

added benchmarking feature

optimized echo simulation. added beam width limiting for antennas

cleaned elevation_reader. added antenna pattern CLI options

seperated antenna pattern handling from EchoSimulator

added scripts for parsing binary files

temporary fix for void pixels

fixed shadowing code

fixed copy-paste error

optimised shadowing calculations. added options. integrated options