add custom authorization token option

[tkulpa]

✔ PrismaGenerator.ts › basic generator ✔ PrismaFlowGenerator.ts › flow generator ✔ PrismaTypescriptGenerator.ts › typescript generator ✔ Prisma.ts › multiple Prisma instances with unique schemas do not share schemas ✔ Prisma.ts › multiple Prisma instances with the same schema use a cached copy

5 tests passed