Add a dry run publish script #26

Job	Run time
Compile and Test CodeQL Packs (cpp)	1m 32s
Compile and Test CodeQL Packs (csharp)	1m 30s
Compile and Test CodeQL Packs (javascript)	1m 7s
Compile and Test CodeQL Packs (common)	9m 41s
Compile and Test CodeQL Packs (ruby)	2m 19s
Compile and Test CodeQL Packs (java)	1m 26s
Compile and Test CodeQL Packs (python)	1m 13s
Compile and Test CodeQL Packs (go)	1m 20s
Validate test results	6s
	20m 14s

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