Profile class loader and impact in performance

[enridaga]

The CLI has some trace log messages to monitor execution time, for example:

[main] TRACE com.github.sparqlanything.cli.SPARQLAnything - [time] Before init: 349
[main] TRACE com.github.sparqlanything.cli.SPARQLAnything - [time] After init: 359
[main] DEBUG com.github.sparqlanything.cli.SPARQLAnything - No input file
[main] TRACE com.github.sparqlanything.cli.SPARQLAnything - [time] Before executeQuery: 401
[main] TRACE com.github.sparqlanything.cli.SPARQLAnything - [time] After executeQuery: 8824
[main] TRACE com.github.sparqlanything.cli.SPARQLAnything - [time] Process ends: 8824

I noticed how most of the times there are about ~400ms spent in classloading before executing the query. The project is growing fast and I was wondering maybe we should do some analysis and see if we there are unneeded classes loaded (for example, functions loaded as static code). It may be worth studying whether we can be lazy in loading the function library (which will grow forever)