docs: Add a DEBUG.md #789

Job	Run time
PHP 8.0 Unit Test (ubuntu-latest)	4m 47s
PHP 8.1 Unit Test (ubuntu-latest)	5m 44s
Dev Commands Unit Tests	38s
Package Tests (Lowest Dependencies)	11m 0s
Package Tests	11m 6s
PHP 8.2 Unit Test (ubuntu-latest)	5m 16s
PHP 8.3 Unit Test (ubuntu-latest)	5m 21s
PHP 8.0 Unit Test (windows-latest)	8m 1s
PHP 8.1 Unit Test (windows-latest)	9m 31s
PHP 8.2 Unit Test (windows-latest)	9m 3s
PHP 8.3 Unit Test (windows-latest)	9m 32s
PHP 8.0 Unit Test + protobuf extension (ubuntu-latest)	3m 55s
	1h 23m 54s

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