Test

Add documentation for running MESSAGEix on UniCC #2805

Job	Run time
Check permissions, identify ref to test	1s
Warm Git LFS cache (macos-13)	16s
Code quality	42s
Warm Git LFS cache (macos-latest)	15s
Warm Git LFS cache (ubuntu-latest)	9s
Warm Git LFS cache (windows-latest)	22s
macos-13-py3.11-upstream-v3.6.0	24m 58s
macos-13-py3.11-upstream-v3.7.0	25m 44s
macos-13-py3.12-upstream-v3.8.0	31m 50s
macos-13-py3.13-upstream-v3.9.0	22m 37s
macos-latest-py3.13-upstream-main	21m 39s
ubuntu-latest-py3.11-upstream-v3.6.0	10m 4s
ubuntu-latest-py3.11-upstream-v3.7.0	12m 34s
ubuntu-latest-py3.12-upstream-v3.8.0	18m 24s
ubuntu-latest-py3.13-upstream-v3.9.0	20m 20s
ubuntu-latest-py3.13-upstream-main	19m 33s
windows-latest-py3.11-upstream-v3.6.0	13m 53s
windows-latest-py3.11-upstream-v3.7.0	17m 41s
windows-latest-py3.12-upstream-v3.8.0	24m 46s
windows-latest-py3.13-upstream-v3.9.0	24m 33s
windows-latest-py3.13-upstream-main	28m 5s
	5h 18m 26s

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