[FEATURE] Formatter classes to support flexible configuration of logger output. Special thanks to Paul O'Neill for this contribution! [FEATURE] Formatter base class which supports the old logger format. [FEATURE] HSE_v2_Formatter subclass supporting a new, improved for better readability. [FEATURE] JSONLFormatter subclass suporting the JSON Lines format. Special thanks to Paul O'Neill for his contribution! [IMPROVEMENT] Reverse call chain order for better readability (Main-VI -> Sub-VI -> Sub-Sub-VI). [IMPROVEMENT] Set the error-in terminal for "ERROR.vi" and "CRITICAL.vi" to "required" to avoid logger VIs on the block diagram that never log anything. [IMPROVEMENT] Clean up the error source string to remove unnecessary information and to remove line breaks. [FIX] Several minor fixes.