feat: ionospheric and tropospheric corrections in calc_pvt

[siebc]

Ionospheric and tropospheric delays can now be corrected for in calc_pvt.

The ionosphere is modeled with the NTCM-G or Klobuchar model, depending on parameter availability.

The troposphere is corrected for using the Saastamoinen model.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 92.77%. Comparing base (ef66263) to head (269cfda).

Additional details and impacted files

@@            Coverage Diff             @@
##           master      #38      +/-   ##
==========================================
+ Coverage   89.38%   92.77%   +3.39%     
==========================================
  Files           5        7       +2     
  Lines         245      360     +115     
==========================================
+ Hits          219      334     +115     
  Misses         26       26              

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[github-actions]

Benchmark Results (Julia v1)

Time benchmarks

	master	269cfda...	master / 269cfda...
calc_pvt/GPSL1/4sats/cold	16.6 ± 0.38 μs	0.0326 ± 0.0045 ms	0.508 ± 0.072
calc_pvt/GPSL1/4sats/warm	25.2 ± 0.46 μs	28.2 ± 4 μs	0.894 ± 0.13
calc_pvt/GPSL1/9sats/cold	24.1 ± 0.49 μs	0.0414 ± 0.00092 ms	0.581 ± 0.018
calc_pvt/GPSL1/9sats/warm	14.8 ± 0.43 μs	19.2 ± 0.48 μs	0.77 ± 0.03
calc_pvt/GalileoE1B/4sats/cold	15.9 ± 0.41 μs	31 ± 5.2 μs	0.515 ± 0.088
calc_pvt/GalileoE1B/4sats/warm	9.08 ± 0.32 μs	11.9 ± 0.36 μs	0.762 ± 0.035
calc_pvt/GalileoE1B/5sats/cold	17.6 ± 0.43 μs	0.032 ± 0.0045 ms	0.551 ± 0.078
calc_pvt/GalileoE1B/5sats/warm	9.85 ± 0.32 μs	13.3 ± 0.38 μs	0.742 ± 0.032
time_to_load	2.14 ± 0.003 s	2.15 ± 0.0073 s	0.999 ± 0.0037

Memory benchmarks

	master	269cfda...	master / 269cfda...
calc_pvt/GPSL1/4sats/cold	0.164 k allocs: 8.78 kB	0.312 k allocs: 16.9 kB	0.52
calc_pvt/GPSL1/4sats/warm	0.246 k allocs: 13.5 kB	0.257 k allocs: 14 kB	0.965
calc_pvt/GPSL1/9sats/cold	0.169 k allocs: 10.7 kB	0.295 k allocs: 18.3 kB	0.584
calc_pvt/GPSL1/9sats/warm	0.13 k allocs: 8.47 kB	0.141 k allocs: 9.02 kB	0.939
calc_pvt/GalileoE1B/4sats/cold	0.164 k allocs: 8.78 kB	0.301 k allocs: 16.3 kB	0.54
calc_pvt/GalileoE1B/4sats/warm	0.125 k allocs: 6.61 kB	0.136 k allocs: 7.09 kB	0.932
calc_pvt/GalileoE1B/5sats/cold	0.165 k allocs: 9.03 kB	0.291 k allocs: 16 kB	0.566
calc_pvt/GalileoE1B/5sats/warm	0.126 k allocs: 6.86 kB	0.137 k allocs: 7.34 kB	0.934
time_to_load	0.149 k allocs: 11.2 kB	0.149 k allocs: 11.2 kB	1

[zsoerenm]

LGTM. Only the documentation build needs to be fixed