Easi 4613/graphql changes

[samoddball]

EASI-4613

• remainder of schema changes
• various comments/vars
• queries/mutations
• postman collection

Description

How to test this change

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• I have provided a detailed description of the changes in this PR.
• I have provided clear instructions on how to test the changes in this PR.
• I have updated tests or written new tests as appropriate in this PR.

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[samoddball]

for future reference, after renaming something in schema.graphql, renaming these functions using an IDE's refactor mechanism before running scripts/dev gql avoids a panic placeholder being slotted in

[aterstriep]

This looks great - thanks for making the frontend updates! I'm approving, but not sure if you want to wait for someone to take a better look at the backend portion.