chore: remove direct avatar upload endpoint (POST /profile/avatar);

feat: add endpoints for presigned upload URLs (GET /upload/avatar, GET /upload/image);
refactor: replace ProfileDto with NewProfileDto in update profile endpoint;
feat: implement S3 integration for avatar management;
fix: update database queries to handle new avatar upload flow;
chore: add new dependencies for S3 handling (golang.org/x/time);
refactor: rename UploadService to S3Service;
refactor: change return type for func LocalizeS3Url(originalURL string) (*url.URL, error);
feat: add custom validator for upload_id

backend/internal/utils/minio.go

@@ -23,22 +23,23 @@ import (
 	"net/url"
 )
 
-func LocalizeS3Url(originalURL string) (string, error) {
+// TODO: Move this method to s3 service
+func LocalizeS3Url(originalURL string) (*url.URL, error) {
 
 	cfg := config.GetConfig()
 	newDomain := fmt.Sprintf("%s:%d", cfg.Hostname, cfg.Port)
 
 	parsedURL, err := url.Parse(originalURL)
 	if err != nil {
-		return "", fmt.Errorf("invalid URL: %w", err)
+		return nil, fmt.Errorf("invalid URL: %w", err)
 	}
 
-	newURL := &url.URL{
+	newURL := url.URL{
 		Scheme: parsedURL.Scheme,
 		Host:   newDomain,
 		Path:   "/s3" + parsedURL.Path,
 		RawQuery: parsedURL.RawQuery,
 	}
 
-	return newURL.String(), nil
+	return &newURL, nil
 }