Add intel lstd++ linker flag.

[MFraters]

Trying to compile on fronterra with the intel compiler gwb-grid didn't link with error messages stating many/all std functions where undefined. This pull request fixes that.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.21%. Comparing base (261c22b) to head (88691ef).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #703      +/-   ##
==========================================
+ Coverage   98.17%   98.21%   +0.03%     
==========================================
  Files         107      107              
  Lines        7463     7462       -1     
==========================================
+ Hits         7327     7329       +2     
+ Misses        136      133       -3     

see 1 file with indirect coverage changes

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[github-actions]

Benchmark	Main	Feature	Difference (99.9% CI)
Slab interpolation simple none	1.019 ± 0.008 (s=460)	1.019 ± 0.004 (s=426)	-0.2% .. +0.1%
Slab interpolation curved simple none	1.016 ± 0.004 (s=438)	1.022 ± 0.003 (s=448)	+0.5% .. +0.7%
Spherical slab interpolation simple none	1.168 ± 0.005 (s=387)	1.169 ± 0.006 (s=386)	-0.1% .. +0.2%
Slab interpolation simple curved CMS	1.060 ± 0.004 (s=415)	1.060 ± 0.005 (s=436)	-0.1% .. +0.1%
Spherical slab interpolation simple CMS	1.551 ± 0.009 (s=286)	1.551 ± 0.009 (s=297)	-0.2% .. +0.1%
Spherical fault interpolation simple none	1.175 ± 0.005 (s=401)	1.174 ± 0.005 (s=368)	-0.2% .. -0.0%
Cartesian min max surface	2.305 ± 0.019 (s=206)	2.304 ± 0.016 (s=187)	-0.3% .. +0.2%
Spherical min max surface	7.212 ± 0.029 (s=60)	7.212 ± 0.029 (s=67)	-0.2% .. +0.2%