Add an extension for CliqueTrees.jl #5822

Job	Run time
Julia nightly - ubuntu-latest-x64 - General;Benchmarks;FileFormats;Nonlinear	5m 54s
Julia nightly - ubuntu-latest-x64 - Bridges/General	14m 45s
Julia 1 - ubuntu-latest-x86 - General;Benchmarks;FileFormats;Nonlinear	8m 4s
Julia 1.10 - ubuntu-latest-x64 - Bridges/General	11m 48s
Julia 1.10 - ubuntu-latest-x64 - General;Benchmarks;FileFormats;Nonlinear	4m 13s
Julia 1 - ubuntu-latest-x86 - Bridges/General	14m 47s
Julia 1 - windows-latest-x64 - General;Benchmarks;FileFormats;Nonlinear	7m 23s
Julia 1.10 - ubuntu-latest-x64 - Bridges/Constraint	8m 0s
Julia 1 - ubuntu-latest-x86 - Utilities	14m 51s
Julia 1 - windows-latest-x64 - Test	14m 51s
Julia 1.10 - ubuntu-latest-x64 - Bridges/Objective;Bridges/Variable	2m 58s
Julia nightly - ubuntu-latest-x64 - Test	13m 45s
Julia 1 - windows-latest-x64 - Utilities	15m 7s
Julia 1 - windows-latest-x64 - Bridges/Objective;Bridges/Variable	5m 54s
Julia nightly - ubuntu-latest-x64 - Bridges/Constraint	14m 48s
Julia 1 - windows-latest-x64 - Bridges/General	13m 2s
Julia 1 - windows-latest-x64 - Bridges/Constraint	14m 4s
Julia nightly - ubuntu-latest-x64 - Bridges/Objective;Bridges/Variable	6m 4s
Julia nightly - ubuntu-latest-x64 - Utilities	14m 50s
Julia 1.10 - ubuntu-latest-x64 - Utilities	6m 45s
Julia 1 - ubuntu-latest-x86 - Bridges/Constraint	10m 27s
Julia 1.10 - ubuntu-latest-x64 - Test	7m 50s
Julia 1 - ubuntu-latest-x86 - Bridges/Objective;Bridges/Variable	7m 24s
Julia 1 - ubuntu-latest-x86 - Test	8m 43s
	4h 6m 17s

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