Allow setting default host/ip in R server

[BSchilperoort]

closes #38

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.

Project coverage is 96.22%. Comparing base (6c79062) to head (c9a7ecc).
Report is 2 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff             @@
##             main      #39       +/-   ##
===========================================
+ Coverage   81.53%   96.22%   +14.68%     
===========================================
  Files          53        2       -51     
  Lines        2665      371     -2294     
  Branches       27        0       -27     
===========================================
- Hits         2173      357     -1816     
+ Misses        489       14      -475     
+ Partials        3        0        -3     

Components	Coverage Δ
Python	∅ <ø> (∅)
Julia	∅ <ø> (∅)
R	96.22% <0.00%> (-0.53%)	⬇️

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