Reenable combined sky maps now using multi-ordering

This MR both enables the following functionality:

• Create multi-order combined sky maps using the GRB localization to re-weight the GW localization
• Change logic in external_triggers.handle_grb_igwn_alert to create combined sky maps as soon as available
• Include combined sky maps in both GCN notices, GCN circulars, and AVRO alert packets.

changed milestone to %O4

added External Triggers Sky Maps labels

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• e8d7621d - Fix lint errors

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• af0fbf43 - Add mhealpy

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• f5a4da0a - Keep only mhealpy changes in poetry.lock

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• f5a4da0a...5e90d979 - 3 commits from branch emfollow:main
• 6b6428af - Use multi-ordered sky maps in RAVEN pipeline; fixes #408 (closed)
• ee54e1ae - Fix lint errors
• 0a626b21 - Add mhealpy
• 8d445d38 - Keep only mhealpy changes in poetry.lock
• 5f7812b7 - Fix tests

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• 013155d1 - Use multi-ordered sky maps in RAVEN pipeline; fixes #408 (closed)

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approved this merge request

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• 013155d1...9e2dab14 - 28 commits from branch emfollow:main
• 8c51da24 - Use multi-ordered sky maps in RAVEN pipeline; fixes #408 (closed)

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• 3822dcab - Fix tuple bug

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• c8aeec5a - Again fix tuple bug

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• 6246fad6 - Fix typo

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• 109140a8 - Fix incorrect column name

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Looking at some testing, I'm seeing some pretty impressive results. The delay of the coincidence FAR is around 3 secs and the combined sky map is about 4 sec.

I'm going to keep this MR as is to finish incorporating combined sky maps but will create another MR to include multi-ordered sky maps in the joint FAR calculation.

mentioned in merge request !969 (merged)

changed title from Draft: Use multi-ordered sky maps in RAVEN pipeline; fixes #408 to Draft: Reenable combined sky maps now using multi-ordering

changed the description

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• 663570d6 - Add method to reweight GW sky map using external; no longer regrid

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added 73 commits

• 663570d6...70e573de - 66 commits from branch emfollow:main
• 0ce2e59e - Use multi-ordered sky maps in RAVEN pipeline; fixes #408 (closed)
• 2f1731e4 - Fix tuple bug
• ea21308d - Again fix tuple bug
• 17aa96fd - Fix typo
• 75e7ba3f - Fix incorrect column name
• 223453de - Add method to reweight GW sky map using external; no longer regrid
• dab2abd5 - Remove mhealpy use

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