Add support to diff DocC Archives#908

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emilyychenn wants to merge 14 commits intoswiftlang:mainfrom

emilyychenn:diff-doccarchives

Commits on May 21, 2024

Set up diff command line inputs.
emilyychenn
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Diff two DocC Archives to produce three lists: (1) The existing symbols within the first DocC Archive, (2) The existing symbols within the second DocC Archive, and (3) The new symbols added to the …
emilyychenn
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Diff now returns all symbols as links.
emilyychenn
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Added support for exports and for docc archives, and return both additions and removals.
emilyychenn
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Remove unused ChangeLogTemplate from CatalogTemplateKind.
emilyychenn
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Remove unused DiffRenderJSON.swift file.
emilyychenn
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Update help menu description and parameter naming.
emilyychenn
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Remove extra logging.
emilyychenn
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Add logic to return added/removed symbols in an alphabetical list.
emilyychenn
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Group symbols by highest level path component, and separate groups by spaces.
emilyychenn
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Add changes for demo; default diff is only modules, classes, protocols, and structs; and include --show-all flag for more granular symbol diff (i.e. all symbols that have changed).
emilyychenn
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Cleanup GenerateChangeLog command, removing unnecessary functions.
emilyychenn
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Refactor to resolve some PR comments.
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Use LogHandle instead of just print().
emilyychenn
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