Clean server post refactor to remove Hasura (#156)

* Clean BE post refactor to remove Hasura

* Add server CI

server/src/api/resolvers/user.resolver.ts

@@ -1,4 +1,4 @@
-import { Resolver, Query, Args, Mutation } from '@nestjs/graphql';
+import { Resolver, Query, Args } from '@nestjs/graphql';
 import { PrismaService } from 'src/database/prisma.service';
 import { UseGuards } from '@nestjs/common';
 import { JwtAuthGuard } from 'src/auth/guards/jwt.auth.guard';