Use classic comment style for CMakelists copyright notice

[WesleyRosenblum]

Description of changes:

The multiline comment at the top of CMakeLists.txt is only supported by CMake 3.0+. This means the cmake_minimum_required(VERSION 3.0) check on subsequent lines is not reached when using older versions of CMake, so you end up with an error such as:

Parse error.  Expected "(", got unquoted argument with text "Amazon.com,".

This change switches to using comments supported by older versions of CMake so the cmake_minimum_required can produce a more useful error message.

Testing:

CI

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license and the ISC license.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (28dc103) 95.27% compared to head (ec56c75) 95.27%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #304   +/-   ##
=======================================
  Coverage   95.27%   95.27%           
=======================================
  Files          55       55           
  Lines        7010     7010           
=======================================
  Hits         6679     6679           
  Misses        331      331           

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