Update Turbomole reader

[awvwgk]

• do not backspace on unit to allow reading from stdin
• support eht group in coord format for reading of charge/uhf info

[codecov]

Codecov Report

Merging #18 (cf73c2e) into main (a2f70b0) will increase coverage by 0.15%.
The diff coverage is 74.15%.

@@            Coverage Diff             @@
##             main      #18      +/-   ##
==========================================
+ Coverage   64.22%   64.38%   +0.15%     
==========================================
  Files          49       49              
  Lines        4095     4175      +80     
  Branches     1333     1357      +24     
==========================================
+ Hits         2630     2688      +58     
  Misses        553      553              
- Partials      912      934      +22     

Impacted Files	Coverage Δ
test/test_read_turbomole.f90	77.58% <73.52%> (-0.84%)	⬇️
src/mctc/io/read/turbomole.f90	78.41% <75.00%> (-1.28%)	⬇️
src/mctc/io/write/turbomole.f90	90.90% <100.00%> (+0.90%)	⬆️

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