fix: implement temporary schema definition to support datetime scalars

[morozj01]

Ensure DateTime scalar inputs are converted to string - #53

Description

This is meant to be a temporary solution to enable datetime scalar types in Ceramic models while this pull request is in review (as there has been no activity for some time.)

This change introduces a custom datetime scalar definition in a new file which is meant to be deleted after the solution is merged into the graphql-scalars package

This schema definition is essentially a simplified copy of the logic defined in the graphql-scalars package.

It purposely kept minimal and therefore only ISO strings in UTC time are supported - as per the documentation

Passing in Unix timestamp or JS date object will throw an error.

How Has This Been Tested?

Describe the tests that you ran to verify your changes. Provide instructions for reproduction.

Currently creating documents with a datetime scalar field will throw this error

With this change, I was able to upload datetime scalar values without issue

IDs:

• kjzl6kcym7w8y5f7jspauwxecxeuzrri0rigwwl5h7x8i9ebhmh7hi2thxmksx0
• kjzl6kcym7w8y60p5d46t282vvl4b8t4pkfk1364rlhbxtqhb71i2rtsckvqrvb
• kjzl6kcym7w8y5u9ktpponjvo0jh0pjl54tc9tx0pl3ayupzxaamdb7vpyduc0y

Model: kjzl6hvfrbw6c65z7bpyak6mgz9maadbucil8sey0lkuy9ebiinbjl0vd9ygal4

Let me know if/what additional testing is needed

Definition of Done

Before submitting this PR, please make sure:

• The work addresses the description and outcomes in the issue
• I have added relevant tests for new or updated functionality
• My code follows conventions, is well commented, and easy to understand
• My code builds and tests pass without any errors or warnings
• I have tagged the relevant reviewers
• I have updated the READMEs of affected packages
• I have made corresponding changes to the documentation
• The changes have been communicated to interested parties

[PaulLeCam]

Thanks for your PR!
Looks good to me overall, just a few comments.

[PaulLeCam]

Thanks for the changes!

[PaulLeCam]

@morozj01 could you update the scalar description to use the one from graphql-scalars so it matches the existing test snapshots please?

[morozj01]

@morozj01 could you update the scalar description to use the one from graphql-scalars so it matches the existing test snapshots please?

For sure - just updated

[PaulLeCam]

Thanks!