Command output repr

[koubaa]

I was using pymapdl and was annoyed at the printout from commands. I would see things like this:

>>> mapdl.prep7()
'*** ANSYS - ENGINEERING ANALYSIS SYSTEM  RELEASE 2022 R1          22.1BETA ***\n DISTRIBUTED Ansys Mechanical Enterprise                       \n\n 00000000  VERSION=WINDOWS x64   09:29:10  APR 20, 2022 CP=      0.391\n\n                                                                               \n\n\n\n ** WARNING: PRE-RELEASE VERSION OF ANSYS 22.1BETA\n  ANSYS,INC TESTING IS NOT COMPLETE - CHECK RESULTS CAREFULLY **\n\n          ***** ANSYS ANALYSIS DEFINITION (PREP7) *****'
>

with this change, the printout now looks like this:

>>> mapdl.post1()
***** ROUTINE COMPLETED *****  CP =         0.469



 *** ANSYS - ENGINEERING ANALYSIS SYSTEM  RELEASE 2022 R1          22.1BETA ***
 DISTRIBUTED Ansys Mechanical Enterprise

 00000000  VERSION=WINDOWS x64   09:45:32  APR 20, 2022 CP=      0.484





 ** WARNING: PRE-RELEASE VERSION OF ANSYS 22.1BETA
  ANSYS,INC TESTING IS NOT COMPLETE - CHECK RESULTS CAREFULLY **

          ***** ANSYS RESULTS INTERPRETATION (POST1) *****

 *** NOTE ***                            CP =       0.484   TIME= 09:45:32
 Reading results into the database (SET command) will update the current
 displacement and force boundary conditions in the database with the
 values from the results file for that load set.  Note that any
 subsequent solutions will use these values unless action is taken to
 either SAVE the current values or not overwrite them (/EXIT,NOSAVE).
>>>

[koubaa]

I also took the liberty to make some minor changes to the readme

[codecov]

Codecov Report

Merging #1054 (1f92d46) into main (a213b90) will increase coverage by 0.03%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main    #1054      +/-   ##
==========================================
+ Coverage   71.64%   71.67%   +0.03%     
==========================================
  Files          43       43              
  Lines        6112     6115       +3     
==========================================
+ Hits         4379     4383       +4     
+ Misses       1733     1732       -1     

[germa89]

I like it the idea. It is convenient.

I have moved the class to the command module (I feel it fit better there), and added unit tests for coverage.

Other than those minors changes, this is good to go.