Implement backend API and database services in Docker setup

- Added a new `api` service for the NestJS backend, including health checks and dependencies on PostgreSQL, Redis, and MinIO.
- Introduced PostgreSQL and Redis services with health checks and configurations for data persistence.
- Added MinIO for S3-compatible object storage and a one-shot service to initialize required buckets.
- Updated the Nginx configuration to proxy requests to the new backend API and MinIO storage.
- Enhanced the Dockerfile to support the new API environment variables and configurations.
- Updated the `package.json` and `package-lock.json` to include new dependencies for QR code generation and other utilities.

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/src/award-issuers/award-issuers.controller.ts

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+import { Controller, Get, UseGuards } from '@nestjs/common';
+
+import { HybridAuthGuard } from 'src/auth/guards/hybrid-auth.guard';
+import { AwardIssuersService } from './award-issuers.service';
+import { AwardIssuerDTO } from './dto/response/award-issuer.dto';
+
+@Controller('award-issuers')
+@UseGuards(HybridAuthGuard)
+export class AwardIssuersController {
+  constructor(private readonly issuersService: AwardIssuersService) {}
+
+  @Get()
+  async findAll() {
+    const issuers = await this.issuersService.findAll();
+    return issuers.map((issuer) => new AwardIssuerDTO(issuer));
+  }
+}

backend/src/award-issuers/award-issuers.module.ts

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+import { Module } from '@nestjs/common';
+import { TypeOrmModule } from '@nestjs/typeorm';
+import { AwardIssuer } from './entities/award-issuer.entity';
+import { AwardIssuersController } from './award-issuers.controller';
+import { AwardIssuersService } from './award-issuers.service';
+
+@Module({
+  imports: [TypeOrmModule.forFeature([AwardIssuer])],
+  controllers: [AwardIssuersController],
+  providers: [AwardIssuersService],
+})
+export class AwardIssuersModule {}

backend/src/award-issuers/award-issuers.service.ts

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+import { Injectable } from '@nestjs/common';
+import { InjectRepository } from '@nestjs/typeorm';
+import { Repository } from 'typeorm';
+import { AwardIssuer } from './entities/award-issuer.entity';
+
+@Injectable()
+export class AwardIssuersService {
+  constructor(
+    @InjectRepository(AwardIssuer)
+    private issuersRepository: Repository<AwardIssuer>,
+  ) {}
+
+  findAll() {
+    return this.issuersRepository.find();
+  }
+}

backend/src/award-issuers/dto/response/award-issuer.dto.ts

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+import { AwardIssuer } from 'src/award-issuers/entities/award-issuer.entity';
+
+export class AwardIssuerDTO {
+  id: string;
+  name: string;
+
+  constructor(awardIssuer: AwardIssuer) {
+    this.id = awardIssuer.id;
+    this.name = awardIssuer.name;
+  }
+}

backend/src/award-issuers/entities/award-issuer.entity.ts

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+import { Award } from 'src/projects/entities/award.entity';
+import {
+  Column,
+  CreateDateColumn,
+  Entity,
+  OneToMany,
+  PrimaryColumn,
+  UpdateDateColumn,
+} from 'typeorm';
+
+@Entity('award_issuers')
+export class AwardIssuer {
+  @PrimaryColumn()
+  id: string;
+
+  @Column()
+  name: string;
+
+  @CreateDateColumn({ type: 'timestamptz' })
+  createdAt: Date;
+
+  @UpdateDateColumn({ type: 'timestamptz' })
+  updatedAt: Date;
+
+  @OneToMany(() => Award, (award) => award.issuer)
+  awards: Award[];
+}