Doc: Update Windows/MSVC installation instructions

[Podde1]

Updated the description for installation on Windows following installation of AMICI, on Windows 10 running python 3.9. Partly relating to #2012.

• Added cmake to required softwares
• Added a notation that compileBLAS.cmd needs to point to the Visual Studio installation
• Paths to the OpenBLAS installation were updated to be able to set the environmental variables correctly
• Updated faulty paths for OpenBLAS enviromental variables
• Updated faulty paths for AMICI_DLL_DIRS enviromental variable

Additionally, added a check in amici.i if AMICI_DLL_DIRS enviromental variable is present

[dweindl]

Great, thanks!

[codecov]

Codecov Report

Merging #2053 (2a7b023) into develop (f40cde9) will decrease coverage by 21.51%.
The diff coverage is n/a.

❗ Current head 2a7b023 differs from pull request most recent head 8aa6172. Consider uploading reports for the commit 8aa6172 to get more accurate results

Additional details and impacted files

@@             Coverage Diff              @@
##           develop    #2053       +/-   ##
============================================
- Coverage    75.26%   53.75%   -21.51%     
============================================
  Files           75       29       -46     
  Lines        13011     4535     -8476     
============================================
- Hits          9793     2438     -7355     
+ Misses        3218     2097     -1121     

Flag	Coverage Δ
cpp	?
petab	53.75% <ø> (ø)
python	?
sbmlsuite	?

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