feat: implement authentication and database modules with relations and group management

Added new authentication strategies (JWT and GitHub OAuth), guards, and controllers. Implemented database module, schema with relations, and group management features, including CRD operations and person-to-group associations. Integrated validation and CORS configuration.

backend/src/modules/persons/dto/create-person.dto.ts

@@ -0,0 +1,83 @@
+import { 
+  IsString, 
+  IsNotEmpty, 
+  IsOptional, 
+  IsObject, 
+  IsUUID, 
+  IsEnum, 
+  IsInt, 
+  IsBoolean, 
+  Min, 
+  Max 
+} from 'class-validator';
+import { Type } from 'class-transformer';
+
+/**
+ * Enum for gender values
+ */
+export enum Gender {
+  MALE = 'MALE',
+  FEMALE = 'FEMALE',
+  NON_BINARY = 'NON_BINARY',
+}
+
+/**
+ * Enum for oral ease level values
+ */
+export enum OralEaseLevel {
+  SHY = 'SHY',
+  RESERVED = 'RESERVED',
+  COMFORTABLE = 'COMFORTABLE',
+}
+
+/**
+ * DTO for creating a new person
+ */
+export class CreatePersonDto {
+  @IsString()
+  @IsNotEmpty()
+  firstName: string;
+
+  @IsString()
+  @IsNotEmpty()
+  lastName: string;
+
+  @IsEnum(Gender)
+  @IsNotEmpty()
+  gender: Gender;
+
+  @IsInt()
+  @Min(1)
+  @Max(5)
+  @Type(() => Number)
+  technicalLevel: number;
+
+  @IsBoolean()
+  @Type(() => Boolean)
+  hasTechnicalTraining: boolean;
+
+  @IsInt()
+  @Min(1)
+  @Max(5)
+  @Type(() => Number)
+  frenchSpeakingLevel: number;
+
+  @IsEnum(OralEaseLevel)
+  @IsNotEmpty()
+  oralEaseLevel: OralEaseLevel;
+
+  @IsInt()
+  @IsOptional()
+  @Min(18)
+  @Max(100)
+  @Type(() => Number)
+  age?: number;
+
+  @IsUUID()
+  @IsNotEmpty()
+  projectId: string;
+
+  @IsObject()
+  @IsOptional()
+  attributes?: Record<string, any>;
+}