Feature Request: add drizzle-zod for mutation input validation #66

Is your feature request related to a problem? Please describe.
trpc allows you to provide a Zod schema to the input() argument for mutations:

export const exampleRouter = createRouter({
                           // Here: v
  create: protectedProcedure.input(...).mutation(({ ctx }) => {
    const { user, db } = ctx;
  }),
});

It would be great if we could use the schema types we define in the DB package for inferring the necessary input.

Describe the solution you'd like
drizzle-zod exists to solve this problem, as it's a plugin for Drizzle ORM that allows you to generate Zod schemas from Drizzle ORM schemas.

Describe alternatives you've considered
N/A

Additional context
Should these be defined in the API package? Or the DB package? (if DB: we'd need to make all the schema types publicly accessible / external to the package.)