Add verification of requirements to install

[BakasuraRCE]

I can't install Delphinus from webinstaller, i installed from source.

Log:

<Info> Downloading Delphinus
<Info> Version: 
<Info> BDS 20.0
<Info> Uninstalling
<Info> Deleting Directory C:\Program Files (x86)\Delphinus\20.0
<Info> Installing
<Info> Copying sourcefolders:
<Info> .
<Info> Compiling Delphinus.dproj
<Info> Win32
<Info> 
<Error> Failed
<Info> Adding Libpathes:
<Error> Failed

[BakasuraRCE]

I verified in deep, the problem was this line:

Delphinus/DN.Compiler.MSBuild.pas

Line 56 in 927fba6

Result := Result + '& msbuild "' + AProjectfile + '" ' + GetMSBuildProperties() + ' > "' + FLogFile + '"';

When the system does not have installed "msbuild" tool, it will silently fail and in the following line no log any error report to show to user, just fail:

Delphinus/DN.Compiler.MSBuild.pas

Line 84 in 927fba6

Result := Execute(BuildCommandLine(AProjectFile)) = 0;