fix: better test for toolbox

The old test was sometimes saying that the toolbox was installed when it
was not. I do not know why. This seems more robust.

src/rotare.m

@@ -57,7 +57,7 @@ function [Results] = rotare(configFile)
     addpath(genpath('.'));
     rmpath(genpath('./airfoil_data/'));
     addpath('./airfoil_data/');
-    if license('test', 'Aerospace_Toolbox')
+    if istoolboxinstalled('Aerospace Toolbox')
         rmpath('./libs/octave-atmosisa/');
     end
 

src/utils/istoolboxinstalled.m

+function result = istoolboxinstalled(toolbox)
+    % ISTOOLBOXINSTALLED Check if a toolbox is installed and available
+    % -----
+    %
+    % Syntax:
+    %   result = isToolboxInstalled(toolbox) returns true if the toolbox is intalled.
+    %
+    % Inputs:
+    %   toolbox: Name of a toolbox, as displayed in `ver` command
+    %
+    % Outputs:
+    %   result  : boolean that indicates if toolbox is installed
+    %
+    % See also: ver.
+    %
+    % <a href="https://gitlab.uliege.be/rotare/documentation">Complete documentation (online)</a>
+
+    % ----------------------------------------------------------------------------------------------
+    % (c) Copyright 2022-2024 University of Liege
+    % Author: Thomas Lambert <t.lambert@uliege.be>
+    % ULiege - Aeroelasticity and Experimental Aerodynamics
+    % MIT License
+    % Repo: https://gitlab.uliege.be/rotare/rotare
+    % Docs: https://gitlab.uliege.be/rotare/documentation
+    % Issues: https://gitlab.uliege.be/rotare/rotare/-/issues
+    %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+    v = ver;
+    result = any(strcmp(toolbox, {v.Name}));
+
+end