[Improvement] Improved generate-graphql-types script

[OustanDing]

Notion ticket link

Ticket

Implementation description

• Output errors to stdout
• Create a backup types-backup.ts file before deleting types.ts. If execution fails, restore the types.ts file using the backup file. This eliminates the cycle that arose from deleting types.ts unconditionally, which disabled the app from running, which in turn meant that we could not generate GraphQL types.
• Added lib/graphql/types.ts to .prettierignore so that we don't accidentally make changes to it

Notes

• QOL change :))

Checklist

• My PR name is descriptive, is in imperative tense and starts with one of the following: [Feature],[Improvement] or [Fix],
• I have run the appropriate linter(s)
• I have requested a review from the RCD team on GitHub, or specific people who are associated with this ticket

[railway-app]

This PR is being deployed to Railway 🚅

Live → richmond-centre-for-disability-pr-40.up.railway.app

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