Fix/prisma 7 library (#288)

fix: align prisma addon with v7 requirements

- Bump prisma CLI from ^6.16.3 to ^7.0.0 to match client version
- Update PrismaBetterSQLite3 to PrismaBetterSqlite3 per v7 naming

Adapter class rename per: https://github.com/prisma/prisma/releases/tag/7.0.0

Co-authored-by: Ronny Holm <12713055+ronnyholm@users.noreply.github.com>

Author: jherr