Always print out the plugin version used in the begin step

[martin-strecker-sonarsource]

In the begin step, executed in verbose mode the plugin version is displayed. The version should be displayed always next to "Processing plugin".

13:08:42.232  Installing required Roslyn analyzers...
13:08:42.233  Processing plugin: csharp version 8.43.0.51858
13:08:42.234  Cache hit: using plugin files from C:\Users\***\AppData\Local\Temp\.sonarqube\resources\1
13:08:42.234  Processing plugin: vbnet version 8.43.0.51858
13:08:42.235  Cache hit: using plugin files from C:\Users\***\AppData\Local\Temp\.sonarqube\resources\2
13:08:42.237  Writing Roslyn analyzer additional file to d:\***
13:08:42.262  Pre-processing succeeded.