chore: update @prisma/client to version 7.10.0 and add prisma.config.ts for configuration management

- Updated @prisma/client in shared package.json from ^6.0.0 to ^7.10.0.
- Modified stack.md to include generated Prisma client directory and Prisma CLI config file.
- Added prisma.config.ts for managing Prisma configuration, including datasource URL and migrations path.

apps/api/prisma.config.ts

@@ -0,0 +1,15 @@
+import { config } from 'dotenv'
+import { join } from 'node:path'
+import { defineConfig, env } from 'prisma/config'
+
+config({ path: join(process.cwd(), '.env') })
+
+export default defineConfig({
+  schema: 'prisma/schema.prisma',
+  migrations: {
+    path: 'prisma/migrations',
+  },
+  datasource: {
+    url: env('DATABASE_URL'),
+  },
+})