add login feature

server/prisma/schema.prisma

@@ -0,0 +1,18 @@
+generator client {
+  provider = "prisma-client-js"
+  output   = "../generated/prisma"
+}
+
+datasource db {
+  provider = "postgresql"
+  url      = env("DATABASE_URL")
+}
+
+model Users {
+  id              String   @id @default(dbgenerated("gen_random_uuid()")) @db.Uuid
+  username        String   @unique @db.Citext
+  email           String   @unique @db.Citext
+  hashed_password String
+  created_at      DateTime @default(now()) @db.Timestamptz(6)
+  updated_at      DateTime @default(now()) @db.Timestamptz(6)
+}