Add nice license headers to files in examples/ and fuzzing/

Related to #2730

tools/scripts/checkLicense.py

@@ -33,7 +33,8 @@ def check_licences_in_path(path: str) -> int:
 
 def check_licences():
     failed = 0
-    roots = ['src/catch2', 'tests']
+    # Add 'extras' after the amalgamted files are regenerated with the new script (past 3.4.0)
+    roots = ['src/catch2', 'tests', 'examples', 'fuzzing']
     for root in roots:
         failed += check_licences_in_path(root)
     

tools/scripts/generateAmalgamatedFiles.py

@@ -31,6 +31,7 @@ copyright_lines = [
 # The header of the amalgamated file: copyright information + explanation
 # what this file is.
 file_header = '''\
+
 //              Copyright Catch2 Authors
 // Distributed under the Boost Software License, Version 1.0.
 //   (See accompanying file LICENSE.txt or copy at