* Add CI pipeline step and script that validates all files in the repo contain ASCII-only bytes and no UTF-8 BOM
* Update platform-matrix.json to turn on CHECK_ASCII_CHARACTERS
* Fix missing comma in json.
* Update indentation in the ci.test.yml for the bash script
* Exclude the .github folder and test recording json files.
* Remove "recordings" exclusion since it doesn't exist anymore.
* Fixed UTF-8 with BOM and other non-ASCII character issues within the
files in the repo.
* Exclude nlohmann json tests from ASCII validation check.
* Log an intro to the CI console for the validation step.
* Remove codecoverage.cmake exclusion.
* Remove exclusion for docs and tools directories.
